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Finding the Fourth Proportional to 438,228.80, 656,959.20 and 297,531.20

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Solution

The fourth proportional to 438,228.80, 656,959.20 and 297,531.20 is: 446,036.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    438,228.80 : 656,959.20 = 297,531.20 : x
  2. Step 2: Convert to fraction form
    438,228.80/656,959.20 = 297,531.20/x
  3. Step 3: Cross multiply
    438,228.80x = 656,959.20 × 297,531.20
  4. Step 4: Simplify right side
    438,228.80x = 195,465,859,127.04
  5. Step 5: Solve for x
    x = 195,465,859,127.04/438,228.80
  6. Step 6: Final answer
    x = 446,036.09

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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.