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Finding the Fourth Proportional to 610,539.43, 915,948.66 and 211,179.86

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Solution

The fourth proportional to 610,539.43, 915,948.66 and 211,179.86 is: 316,818.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    610,539.43 : 915,948.66 = 211,179.86 : x
  2. Step 2: Convert to fraction form
    610,539.43/915,948.66 = 211,179.86/x
  3. Step 3: Cross multiply
    610,539.43x = 915,948.66 × 211,179.86
  4. Step 4: Simplify right side
    610,539.43x = 193,429,912,867.78
  5. Step 5: Solve for x
    x = 193,429,912,867.78/610,539.43
  6. Step 6: Final answer
    x = 316,818.05

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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.