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Finding the Fourth Proportional to 399,148.88, 550,825.47 and 272,046.51

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Solution

The fourth proportional to 399,148.88, 550,825.47 and 272,046.51 is: 375,424.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    399,148.88 : 550,825.47 = 272,046.51 : x
  2. Step 2: Convert to fraction form
    399,148.88/550,825.47 = 272,046.51/x
  3. Step 3: Cross multiply
    399,148.88x = 550,825.47 × 272,046.51
  4. Step 4: Simplify right side
    399,148.88x = 149,850,146,732.61
  5. Step 5: Solve for x
    x = 149,850,146,732.61/399,148.88
  6. Step 6: Final answer
    x = 375,424.20

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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.