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Finding the Fourth Proportional to 375,398.21, 517,634.42 and 239,216.46

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Solution

The fourth proportional to 375,398.21, 517,634.42 and 239,216.46 is: 329,854.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    375,398.21 : 517,634.42 = 239,216.46 : x
  2. Step 2: Convert to fraction form
    375,398.21/517,634.42 = 239,216.46/x
  3. Step 3: Cross multiply
    375,398.21x = 517,634.42 × 239,216.46
  4. Step 4: Simplify right side
    375,398.21x = 123,826,670,389.34
  5. Step 5: Solve for x
    x = 123,826,670,389.34/375,398.21
  6. Step 6: Final answer
    x = 329,854.18

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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.