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Finding the Fourth Proportional to 250,387.34, 345,534.53 and 137,207.66

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Solution

The fourth proportional to 250,387.34, 345,534.53 and 137,207.66 is: 189,346.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    250,387.34 : 345,534.53 = 137,207.66 : x
  2. Step 2: Convert to fraction form
    250,387.34/345,534.53 = 137,207.66/x
  3. Step 3: Cross multiply
    250,387.34x = 345,534.53 × 137,207.66
  4. Step 4: Simplify right side
    250,387.34x = 47,409,981,896.79
  5. Step 5: Solve for x
    x = 47,409,981,896.79/250,387.34
  6. Step 6: Final answer
    x = 189,346.57

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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.