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Finding the Fourth Proportional to 231,290.70, 346,244.85 and 137,748.30

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Solution

The fourth proportional to 231,290.70, 346,244.85 and 137,748.30 is: 206,210.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    231,290.70 : 346,244.85 = 137,748.30 : x
  2. Step 2: Convert to fraction form
    231,290.70/346,244.85 = 137,748.30/x
  3. Step 3: Cross multiply
    231,290.70x = 346,244.85 × 137,748.30
  4. Step 4: Simplify right side
    231,290.70x = 47,694,639,471.26
  5. Step 5: Solve for x
    x = 47,694,639,471.26/231,290.70
  6. Step 6: Final answer
    x = 206,210.80

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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.