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Finding the Fourth Proportional to 275,307.15, 412,873.25 and 187,127.31

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Solution

The fourth proportional to 275,307.15, 412,873.25 and 187,127.31 is: 280,631.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    275,307.15 : 412,873.25 = 187,127.31 : x
  2. Step 2: Convert to fraction form
    275,307.15/412,873.25 = 187,127.31/x
  3. Step 3: Cross multiply
    275,307.15x = 412,873.25 × 187,127.31
  4. Step 4: Simplify right side
    275,307.15x = 77,259,862,308.69
  5. Step 5: Solve for x
    x = 77,259,862,308.69/275,307.15
  6. Step 6: Final answer
    x = 280,631.51

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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.