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Finding the Fourth Proportional to 639,265.68, 958,649.28 and 239,688.24

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Solution

The fourth proportional to 639,265.68, 958,649.28 and 239,688.24 is: 359,438.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    639,265.68 : 958,649.28 = 239,688.24 : x
  2. Step 2: Convert to fraction form
    639,265.68/958,649.28 = 239,688.24/x
  3. Step 3: Cross multiply
    639,265.68x = 958,649.28 × 239,688.24
  4. Step 4: Simplify right side
    639,265.68x = 229,776,958,700.47
  5. Step 5: Solve for x
    x = 229,776,958,700.47/639,265.68
  6. Step 6: Final answer
    x = 359,438.91

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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.