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Finding the Fourth Proportional to 231,870.80, 347,806.20 and 74,104.40

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Solution

The fourth proportional to 231,870.80, 347,806.20 and 74,104.40 is: 111,156.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    231,870.80 : 347,806.20 = 74,104.40 : x
  2. Step 2: Convert to fraction form
    231,870.80/347,806.20 = 74,104.40/x
  3. Step 3: Cross multiply
    231,870.80x = 347,806.20 × 74,104.40
  4. Step 4: Simplify right side
    231,870.80x = 25,773,969,767.28
  5. Step 5: Solve for x
    x = 25,773,969,767.28/231,870.80
  6. Step 6: Final answer
    x = 111,156.60

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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.