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Finding the Fourth Proportional to 398,606.56, 597,779.84 and 132,295.60

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Solution

The fourth proportional to 398,606.56, 597,779.84 and 132,295.60 is: 198,400.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    398,606.56 : 597,779.84 = 132,295.60 : x
  2. Step 2: Convert to fraction form
    398,606.56/597,779.84 = 132,295.60/x
  3. Step 3: Cross multiply
    398,606.56x = 597,779.84 × 132,295.60
  4. Step 4: Simplify right side
    398,606.56x = 79,083,642,600.70
  5. Step 5: Solve for x
    x = 79,083,642,600.70/398,606.56
  6. Step 6: Final answer
    x = 198,400.25

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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.