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Finding the Fourth Proportional to 440,312.40, 660,468.60 and 159,793.20

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Solution

The fourth proportional to 440,312.40, 660,468.60 and 159,793.20 is: 239,689.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    440,312.40 : 660,468.60 = 159,793.20 : x
  2. Step 2: Convert to fraction form
    440,312.40/660,468.60 = 159,793.20/x
  3. Step 3: Cross multiply
    440,312.40x = 660,468.60 × 159,793.20
  4. Step 4: Simplify right side
    440,312.40x = 105,538,391,093.52
  5. Step 5: Solve for x
    x = 105,538,391,093.52/440,312.40
  6. Step 6: Final answer
    x = 239,689.80

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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.