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Finding the Fourth Proportional to 347,463.60, 521,195.40 and 137,074.20

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Solution

The fourth proportional to 347,463.60, 521,195.40 and 137,074.20 is: 205,611.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    347,463.60 : 521,195.40 = 137,074.20 : x
  2. Step 2: Convert to fraction form
    347,463.60/521,195.40 = 137,074.20/x
  3. Step 3: Cross multiply
    347,463.60x = 521,195.40 × 137,074.20
  4. Step 4: Simplify right side
    347,463.60x = 71,442,442,498.68
  5. Step 5: Solve for x
    x = 71,442,442,498.68/347,463.60
  6. Step 6: Final answer
    x = 205,611.30

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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.