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Finding the Fourth Proportional to 438,301.80, 656,934.30 and 185,581.80

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Solution

The fourth proportional to 438,301.80, 656,934.30 and 185,581.80 is: 278,153.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    438,301.80 : 656,934.30 = 185,581.80 : x
  2. Step 2: Convert to fraction form
    438,301.80/656,934.30 = 185,581.80/x
  3. Step 3: Cross multiply
    438,301.80x = 656,934.30 × 185,581.80
  4. Step 4: Simplify right side
    438,301.80x = 121,915,049,875.74
  5. Step 5: Solve for x
    x = 121,915,049,875.74/438,301.80
  6. Step 6: Final answer
    x = 278,153.20

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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.