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Finding the Fourth Proportional to 391,569.30, 587,353.95 and 368,241.30

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Solution

The fourth proportional to 391,569.30, 587,353.95 and 368,241.30 is: 552,361.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    391,569.30 : 587,353.95 = 368,241.30 : x
  2. Step 2: Convert to fraction form
    391,569.30/587,353.95 = 368,241.30/x
  3. Step 3: Cross multiply
    391,569.30x = 587,353.95 × 368,241.30
  4. Step 4: Simplify right side
    391,569.30x = 216,287,982,108.14
  5. Step 5: Solve for x
    x = 216,287,982,108.14/391,569.30
  6. Step 6: Final answer
    x = 552,361.95

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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.