Home / 393,454.20-591,347.70-342,132.60

Finding the Fourth Proportional to 393,454.20, 591,347.70 and 342,132.60

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Solution

The fourth proportional to 393,454.20, 591,347.70 and 342,132.60 is: 514,213.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    393,454.20 : 591,347.70 = 342,132.60 : x
  2. Step 2: Convert to fraction form
    393,454.20/591,347.70 = 342,132.60/x
  3. Step 3: Cross multiply
    393,454.20x = 591,347.70 × 342,132.60
  4. Step 4: Simplify right side
    393,454.20x = 202,319,326,105.02
  5. Step 5: Solve for x
    x = 202,319,326,105.02/393,454.20
  6. Step 6: Final answer
    x = 514,213.16

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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.