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Finding the Fourth Proportional to 261,452.08, 392,192.79 and 74,449

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Solution

The fourth proportional to 261,452.08, 392,192.79 and 74,449 is: 111,677.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    261,452.08 : 392,192.79 = 74,449 : x
  2. Step 2: Convert to fraction form
    261,452.08/392,192.79 = 74,449/x
  3. Step 3: Cross multiply
    261,452.08x = 392,192.79 × 74,449
  4. Step 4: Simplify right side
    261,452.08x = 29,198,361,022.71
  5. Step 5: Solve for x
    x = 29,198,361,022.71/261,452.08
  6. Step 6: Final answer
    x = 111,677.68

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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.