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Finding the Fourth Proportional to 521,599.20, 782,442.08 and 166,663.68

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Solution

The fourth proportional to 521,599.20, 782,442.08 and 166,663.68 is: 250,009.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    521,599.20 : 782,442.08 = 166,663.68 : x
  2. Step 2: Convert to fraction form
    521,599.20/782,442.08 = 166,663.68/x
  3. Step 3: Cross multiply
    521,599.20x = 782,442.08 × 166,663.68
  4. Step 4: Simplify right side
    521,599.20x = 130,404,676,439.65
  5. Step 5: Solve for x
    x = 130,404,676,439.65/521,599.20
  6. Step 6: Final answer
    x = 250,009.35

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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.