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Finding the Fourth Proportional to 485,475.03, 728,211.48 and 130,489.05

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Solution

The fourth proportional to 485,475.03, 728,211.48 and 130,489.05 is: 195,733.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    485,475.03 : 728,211.48 = 130,489.05 : x
  2. Step 2: Convert to fraction form
    485,475.03/728,211.48 = 130,489.05/x
  3. Step 3: Cross multiply
    485,475.03x = 728,211.48 × 130,489.05
  4. Step 4: Simplify right side
    485,475.03x = 95,023,624,224.29
  5. Step 5: Solve for x
    x = 95,023,624,224.29/485,475.03
  6. Step 6: Final answer
    x = 195,733.29

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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.