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Finding the Fourth Proportional to 399,042.40, 598,563.60 and 132,811.60

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Solution

The fourth proportional to 399,042.40, 598,563.60 and 132,811.60 is: 199,217.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    399,042.40 : 598,563.60 = 132,811.60 : x
  2. Step 2: Convert to fraction form
    399,042.40/598,563.60 = 132,811.60/x
  3. Step 3: Cross multiply
    399,042.40x = 598,563.60 × 132,811.60
  4. Step 4: Simplify right side
    399,042.40x = 79,496,189,417.76
  5. Step 5: Solve for x
    x = 79,496,189,417.76/399,042.40
  6. Step 6: Final answer
    x = 199,217.40

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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.