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Finding the Fourth Proportional to 243,239.62, 364,859.42 and 72,463.91

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Solution

The fourth proportional to 243,239.62, 364,859.42 and 72,463.91 is: 108,695.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    243,239.62 : 364,859.42 = 72,463.91 : x
  2. Step 2: Convert to fraction form
    243,239.62/364,859.42 = 72,463.91/x
  3. Step 3: Cross multiply
    243,239.62x = 364,859.42 × 72,463.91
  4. Step 4: Simplify right side
    243,239.62x = 26,439,140,723.36
  5. Step 5: Solve for x
    x = 26,439,140,723.36/243,239.62
  6. Step 6: Final answer
    x = 108,695.87

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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.