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Finding the Fourth Proportional to 485,756.01, 728,633.37 and 130,770.42

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Solution

The fourth proportional to 485,756.01, 728,633.37 and 130,770.42 is: 196,155.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    485,756.01 : 728,633.37 = 130,770.42 : x
  2. Step 2: Convert to fraction form
    485,756.01/728,633.37 = 130,770.42/x
  3. Step 3: Cross multiply
    485,756.01x = 728,633.37 × 130,770.42
  4. Step 4: Simplify right side
    485,756.01x = 95,283,691,820.92
  5. Step 5: Solve for x
    x = 95,283,691,820.92/485,756.01
  6. Step 6: Final answer
    x = 196,155.46

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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.