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Finding the Fourth Proportional to 391,438.80, 587,254.20 and 181,032.40

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Solution

The fourth proportional to 391,438.80, 587,254.20 and 181,032.40 is: 271,593.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    391,438.80 : 587,254.20 = 181,032.40 : x
  2. Step 2: Convert to fraction form
    391,438.80/587,254.20 = 181,032.40/x
  3. Step 3: Cross multiply
    391,438.80x = 587,254.20 × 181,032.40
  4. Step 4: Simplify right side
    391,438.80x = 106,312,037,236.08
  5. Step 5: Solve for x
    x = 106,312,037,236.08/391,438.80
  6. Step 6: Final answer
    x = 271,593.00

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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.