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Finding the Fourth Proportional to 515,902.30, 773,962.80 and 156,043.60

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Solution

The fourth proportional to 515,902.30, 773,962.80 and 156,043.60 is: 234,098.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    515,902.30 : 773,962.80 = 156,043.60 : x
  2. Step 2: Convert to fraction form
    515,902.30/773,962.80 = 156,043.60/x
  3. Step 3: Cross multiply
    515,902.30x = 773,962.80 × 156,043.60
  4. Step 4: Simplify right side
    515,902.30x = 120,771,941,578.08
  5. Step 5: Solve for x
    x = 120,771,941,578.08/515,902.30
  6. Step 6: Final answer
    x = 234,098.47

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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.