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Finding the Fourth Proportional to 375,401.59, 517,639.07 and 239,219.80

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Solution

The fourth proportional to 375,401.59, 517,639.07 and 239,219.80 is: 329,858.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    375,401.59 : 517,639.07 = 239,219.80 : x
  2. Step 2: Convert to fraction form
    375,401.59/517,639.07 = 239,219.80/x
  3. Step 3: Cross multiply
    375,401.59x = 517,639.07 × 239,219.80
  4. Step 4: Simplify right side
    375,401.59x = 123,829,514,101.54
  5. Step 5: Solve for x
    x = 123,829,514,101.54/375,401.59
  6. Step 6: Final answer
    x = 329,858.79

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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.