Home / 217,091.40-325,637.10-128,299.20

Finding the Fourth Proportional to 217,091.40, 325,637.10 and 128,299.20

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Solution

The fourth proportional to 217,091.40, 325,637.10 and 128,299.20 is: 192,448.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    217,091.40 : 325,637.10 = 128,299.20 : x
  2. Step 2: Convert to fraction form
    217,091.40/325,637.10 = 128,299.20/x
  3. Step 3: Cross multiply
    217,091.40x = 325,637.10 × 128,299.20
  4. Step 4: Simplify right side
    217,091.40x = 41,778,979,420.32
  5. Step 5: Solve for x
    x = 41,778,979,420.32/217,091.40
  6. Step 6: Final answer
    x = 192,448.80

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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.