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Finding the Fourth Proportional to 485,475.53, 728,212.23 and 130,489.54

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Solution

The fourth proportional to 485,475.53, 728,212.23 and 130,489.54 is: 195,734.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    485,475.53 : 728,212.23 = 130,489.54 : x
  2. Step 2: Convert to fraction form
    485,475.53/728,212.23 = 130,489.54/x
  3. Step 3: Cross multiply
    485,475.53x = 728,212.23 × 130,489.54
  4. Step 4: Simplify right side
    485,475.53x = 95,024,078,915.07
  5. Step 5: Solve for x
    x = 95,024,078,915.07/485,475.53
  6. Step 6: Final answer
    x = 195,734.02

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1.5x scale

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.