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Finding the Fourth Proportional to 534,065.28, 736,959.68 and 319,162.56

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Solution

The fourth proportional to 534,065.28, 736,959.68 and 319,162.56 is: 440,414.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    534,065.28 : 736,959.68 = 319,162.56 : x
  2. Step 2: Convert to fraction form
    534,065.28/736,959.68 = 319,162.56/x
  3. Step 3: Cross multiply
    534,065.28x = 736,959.68 × 319,162.56
  4. Step 4: Simplify right side
    534,065.28x = 235,209,938,085.58
  5. Step 5: Solve for x
    x = 235,209,938,085.58/534,065.28
  6. Step 6: Final answer
    x = 440,414.21

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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.