Home / 427,098.07-639,327.61-234,490.80

Finding the Fourth Proportional to 427,098.07, 639,327.61 and 234,490.80

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Solution

The fourth proportional to 427,098.07, 639,327.61 and 234,490.80 is: 351,011.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    427,098.07 : 639,327.61 = 234,490.80 : x
  2. Step 2: Convert to fraction form
    427,098.07/639,327.61 = 234,490.80/x
  3. Step 3: Cross multiply
    427,098.07x = 639,327.61 × 234,490.80
  4. Step 4: Simplify right side
    427,098.07x = 149,916,441,558.53
  5. Step 5: Solve for x
    x = 149,916,441,558.53/427,098.07
  6. Step 6: Final answer
    x = 351,011.76

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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.