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Finding the Fourth Proportional to 250,382.79, 345,516.98 and 137,203.11

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Solution

The fourth proportional to 250,382.79, 345,516.98 and 137,203.11 is: 189,334.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    250,382.79 : 345,516.98 = 137,203.11 : x
  2. Step 2: Convert to fraction form
    250,382.79/345,516.98 = 137,203.11/x
  3. Step 3: Cross multiply
    250,382.79x = 345,516.98 × 137,203.11
  4. Step 4: Simplify right side
    250,382.79x = 47,406,003,527.79
  5. Step 5: Solve for x
    x = 47,406,003,527.79/250,382.79
  6. Step 6: Final answer
    x = 189,334.11

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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.