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Finding the Fourth Proportional to 306,550.24, 423,035.20 and 172,414.24

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Solution

The fourth proportional to 306,550.24, 423,035.20 and 172,414.24 is: 237,929.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    306,550.24 : 423,035.20 = 172,414.24 : x
  2. Step 2: Convert to fraction form
    306,550.24/423,035.20 = 172,414.24/x
  3. Step 3: Cross multiply
    306,550.24x = 423,035.20 × 172,414.24
  4. Step 4: Simplify right side
    306,550.24x = 72,937,292,501.25
  5. Step 5: Solve for x
    x = 72,937,292,501.25/306,550.24
  6. Step 6: Final answer
    x = 237,929.33

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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.