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Finding the Fourth Proportional to 372,989.04, 514,317 and 251,920.12

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Solution

The fourth proportional to 372,989.04, 514,317 and 251,920.12 is: 347,374.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    372,989.04 : 514,317 = 251,920.12 : x
  2. Step 2: Convert to fraction form
    372,989.04/514,317 = 251,920.12/x
  3. Step 3: Cross multiply
    372,989.04x = 514,317 × 251,920.12
  4. Step 4: Simplify right side
    372,989.04x = 129,566,800,358.04
  5. Step 5: Solve for x
    x = 129,566,800,358.04/372,989.04
  6. Step 6: Final answer
    x = 347,374.28

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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.