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Finding the Fourth Proportional to 545,329.92, 752,360.48 and 315,761.88

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Solution

The fourth proportional to 545,329.92, 752,360.48 and 315,761.88 is: 435,638.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    545,329.92 : 752,360.48 = 315,761.88 : x
  2. Step 2: Convert to fraction form
    545,329.92/752,360.48 = 315,761.88/x
  3. Step 3: Cross multiply
    545,329.92x = 752,360.48 × 315,761.88
  4. Step 4: Simplify right side
    545,329.92x = 237,566,758,023.69
  5. Step 5: Solve for x
    x = 237,566,758,023.69/545,329.92
  6. Step 6: Final answer
    x = 435,638.59

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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.