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Finding the Fourth Proportional to 243,602.70, 365,404.05 and 159,621.90

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Solution

The fourth proportional to 243,602.70, 365,404.05 and 159,621.90 is: 239,432.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    243,602.70 : 365,404.05 = 159,621.90 : x
  2. Step 2: Convert to fraction form
    243,602.70/365,404.05 = 159,621.90/x
  3. Step 3: Cross multiply
    243,602.70x = 365,404.05 × 159,621.90
  4. Step 4: Simplify right side
    243,602.70x = 58,326,488,728.70
  5. Step 5: Solve for x
    x = 58,326,488,728.70/243,602.70
  6. Step 6: Final answer
    x = 239,432.85

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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.