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Finding the Fourth Proportional to 315,351.68, 435,169.92 and 172,108.16

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Solution

The fourth proportional to 315,351.68, 435,169.92 and 172,108.16 is: 237,500.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    315,351.68 : 435,169.92 = 172,108.16 : x
  2. Step 2: Convert to fraction form
    315,351.68/435,169.92 = 172,108.16/x
  3. Step 3: Cross multiply
    315,351.68x = 435,169.92 × 172,108.16
  4. Step 4: Simplify right side
    315,351.68x = 74,896,294,218.55
  5. Step 5: Solve for x
    x = 74,896,294,218.55/315,351.68
  6. Step 6: Final answer
    x = 237,500.86

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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.