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Finding the Fourth Proportional to 296,346.40, 444,577.20 and 85,991.20

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Solution

The fourth proportional to 296,346.40, 444,577.20 and 85,991.20 is: 129,003.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    296,346.40 : 444,577.20 = 85,991.20 : x
  2. Step 2: Convert to fraction form
    296,346.40/444,577.20 = 85,991.20/x
  3. Step 3: Cross multiply
    296,346.40x = 444,577.20 × 85,991.20
  4. Step 4: Simplify right side
    296,346.40x = 38,229,726,920.64
  5. Step 5: Solve for x
    x = 38,229,726,920.64/296,346.40
  6. Step 6: Final answer
    x = 129,003.51

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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.