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Finding the Fourth Proportional to 250,463.40, 345,652.74 and 137,290.92

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Solution

The fourth proportional to 250,463.40, 345,652.74 and 137,290.92 is: 189,468.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    250,463.40 : 345,652.74 = 137,290.92 : x
  2. Step 2: Convert to fraction form
    250,463.40/345,652.74 = 137,290.92/x
  3. Step 3: Cross multiply
    250,463.40x = 345,652.74 × 137,290.92
  4. Step 4: Simplify right side
    250,463.40x = 47,454,982,675.12
  5. Step 5: Solve for x
    x = 47,454,982,675.12/250,463.40
  6. Step 6: Final answer
    x = 189,468.73

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.