Home / 312,128.08-430,735.56-168,888.40

Finding the Fourth Proportional to 312,128.08, 430,735.56 and 168,888.40

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Solution

The fourth proportional to 312,128.08, 430,735.56 and 168,888.40 is: 233,065.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    312,128.08 : 430,735.56 = 168,888.40 : x
  2. Step 2: Convert to fraction form
    312,128.08/430,735.56 = 168,888.40/x
  3. Step 3: Cross multiply
    312,128.08x = 430,735.56 × 168,888.40
  4. Step 4: Simplify right side
    312,128.08x = 72,746,239,551.50
  5. Step 5: Solve for x
    x = 72,746,239,551.50/312,128.08
  6. Step 6: Final answer
    x = 233,065.35

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.