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Finding the Fourth Proportional to 250,680, 345,938.40 and 137,503.02

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Solution

The fourth proportional to 250,680, 345,938.40 and 137,503.02 is: 189,754.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    250,680 : 345,938.40 = 137,503.02 : x
  2. Step 2: Convert to fraction form
    250,680/345,938.40 = 137,503.02/x
  3. Step 3: Cross multiply
    250,680x = 345,938.40 × 137,503.02
  4. Step 4: Simplify right side
    250,680x = 47,567,574,733.97
  5. Step 5: Solve for x
    x = 47,567,574,733.97/250,680
  6. Step 6: Final answer
    x = 189,754.17

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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.