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Finding the Fourth Proportional to 231,630.40, 347,445.60 and 65,418.40

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Solution

The fourth proportional to 231,630.40, 347,445.60 and 65,418.40 is: 98,127.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    231,630.40 : 347,445.60 = 65,418.40 : x
  2. Step 2: Convert to fraction form
    231,630.40/347,445.60 = 65,418.40/x
  3. Step 3: Cross multiply
    231,630.40x = 347,445.60 × 65,418.40
  4. Step 4: Simplify right side
    231,630.40x = 22,729,335,239.04
  5. Step 5: Solve for x
    x = 22,729,335,239.04/231,630.40
  6. Step 6: Final answer
    x = 98,127.60

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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.