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Finding the Fourth Proportional to 521,490.00, 782,356.31 and 161,641.76

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Solution

The fourth proportional to 521,490.00, 782,356.31 and 161,641.76 is: 242,500.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    521,490.00 : 782,356.31 = 161,641.76 : x
  2. Step 2: Convert to fraction form
    521,490.00/782,356.31 = 161,641.76/x
  3. Step 3: Cross multiply
    521,490.00x = 782,356.31 × 161,641.76
  4. Step 4: Simplify right side
    521,490.00x = 126,461,453,837.42
  5. Step 5: Solve for x
    x = 126,461,453,837.42/521,490.00
  6. Step 6: Final answer
    x = 242,500.25

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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.