Home / 209,639,111,856.80-314,458,667,785.20-172,416,133,911.20

Finding the Fourth Proportional to 209,639,111,856.80, 314,458,667,785.20 and 172,416,133,911.20

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Solution

The fourth proportional to 209,639,111,856.80, 314,458,667,785.20 and 172,416,133,911.20 is: 258,624,200,866.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    209,639,111,856.80 : 314,458,667,785.20 = 172,416,133,911.20 : x
  2. Step 2: Convert to fraction form
    209,639,111,856.80/314,458,667,785.20 = 172,416,133,911.20/x
  3. Step 3: Cross multiply
    209,639,111,856.80x = 314,458,667,785.20 × 172,416,133,911.20
  4. Step 4: Simplify right side
    209,639,111,856.80x = 54,217,747,774,390,602,301,440
  5. Step 5: Solve for x
    x = 54,217,747,774,390,602,301,440/209,639,111,856.80
  6. Step 6: Final answer
    x = 258,624,200,866.80

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.