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Finding the Fourth Proportional to 391,935.04, 587,436 and 272,962.24

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Solution

The fourth proportional to 391,935.04, 587,436 and 272,962.24 is: 409,118.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    391,935.04 : 587,436 = 272,962.24 : x
  2. Step 2: Convert to fraction form
    391,935.04/587,436 = 272,962.24/x
  3. Step 3: Cross multiply
    391,935.04x = 587,436 × 272,962.24
  4. Step 4: Simplify right side
    391,935.04x = 160,347,846,416.64
  5. Step 5: Solve for x
    x = 160,347,846,416.64/391,935.04
  6. Step 6: Final answer
    x = 409,118.43

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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.