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Finding the Fourth Proportional to 576,654.96, 865,292.64 and 239,928

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Solution

The fourth proportional to 576,654.96, 865,292.64 and 239,928 is: 360,021.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    576,654.96 : 865,292.64 = 239,928 : x
  2. Step 2: Convert to fraction form
    576,654.96/865,292.64 = 239,928/x
  3. Step 3: Cross multiply
    576,654.96x = 865,292.64 × 239,928
  4. Step 4: Simplify right side
    576,654.96x = 207,607,932,529.92
  5. Step 5: Solve for x
    x = 207,607,932,529.92/576,654.96
  6. Step 6: Final answer
    x = 360,021.06

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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.