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Finding the Fourth Proportional to 398,779.98, 598,270.77 and 132,541.80

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Solution

The fourth proportional to 398,779.98, 598,270.77 and 132,541.80 is: 198,846.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    398,779.98 : 598,270.77 = 132,541.80 : x
  2. Step 2: Convert to fraction form
    398,779.98/598,270.77 = 132,541.80/x
  3. Step 3: Cross multiply
    398,779.98x = 598,270.77 × 132,541.80
  4. Step 4: Simplify right side
    398,779.98x = 79,295,884,743.19
  5. Step 5: Solve for x
    x = 79,295,884,743.19/398,779.98
  6. Step 6: Final answer
    x = 198,846.20

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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.