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Finding the Fourth Proportional to 250,790.16, 375,686.98 and 138,191.10

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Solution

The fourth proportional to 250,790.16, 375,686.98 and 138,191.10 is: 207,012.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    250,790.16 : 375,686.98 = 138,191.10 : x
  2. Step 2: Convert to fraction form
    250,790.16/375,686.98 = 138,191.10/x
  3. Step 3: Cross multiply
    250,790.16x = 375,686.98 × 138,191.10
  4. Step 4: Simplify right side
    250,790.16x = 51,916,597,021.88
  5. Step 5: Solve for x
    x = 51,916,597,021.88/250,790.16
  6. Step 6: Final answer
    x = 207,012.10

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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.