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Finding the Fourth Proportional to 391,444.80, 587,263.20 and 181,038.40

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Solution

The fourth proportional to 391,444.80, 587,263.20 and 181,038.40 is: 271,602.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    391,444.80 : 587,263.20 = 181,038.40 : x
  2. Step 2: Convert to fraction form
    391,444.80/587,263.20 = 181,038.40/x
  3. Step 3: Cross multiply
    391,444.80x = 587,263.20 × 181,038.40
  4. Step 4: Simplify right side
    391,444.80x = 106,317,190,106.88
  5. Step 5: Solve for x
    x = 106,317,190,106.88/391,444.80
  6. Step 6: Final answer
    x = 271,602.00

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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.