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Finding the Fourth Proportional to 516,691.18, 774,618.54 and 161,522.38

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Solution

The fourth proportional to 516,691.18, 774,618.54 and 161,522.38 is: 242,152.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    516,691.18 : 774,618.54 = 161,522.38 : x
  2. Step 2: Convert to fraction form
    516,691.18/774,618.54 = 161,522.38/x
  3. Step 3: Cross multiply
    516,691.18x = 774,618.54 × 161,522.38
  4. Step 4: Simplify right side
    516,691.18x = 125,118,230,172.93
  5. Step 5: Solve for x
    x = 125,118,230,172.93/516,691.18
  6. Step 6: Final answer
    x = 242,152.83

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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.