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Finding the Fourth Proportional to 479,686.77, 719,520.28 and 159,861.86

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Solution

The fourth proportional to 479,686.77, 719,520.28 and 159,861.86 is: 239,789.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    479,686.77 : 719,520.28 = 159,861.86 : x
  2. Step 2: Convert to fraction form
    479,686.77/719,520.28 = 159,861.86/x
  3. Step 3: Cross multiply
    479,686.77x = 719,520.28 × 159,861.86
  4. Step 4: Simplify right side
    479,686.77x = 115,023,852,067.32
  5. Step 5: Solve for x
    x = 115,023,852,067.32/479,686.77
  6. Step 6: Final answer
    x = 239,789.50

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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.