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Finding the Fourth Proportional to 515,801.70, 773,702.55 and 141,824.70

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Solution

The fourth proportional to 515,801.70, 773,702.55 and 141,824.70 is: 212,737.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    515,801.70 : 773,702.55 = 141,824.70 : x
  2. Step 2: Convert to fraction form
    515,801.70/773,702.55 = 141,824.70/x
  3. Step 3: Cross multiply
    515,801.70x = 773,702.55 × 141,824.70
  4. Step 4: Simplify right side
    515,801.70x = 109,730,132,042.99
  5. Step 5: Solve for x
    x = 109,730,132,042.99/515,801.70
  6. Step 6: Final answer
    x = 212,737.05

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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.