Home / 399,146.13-550,821.66-272,043.76

Finding the Fourth Proportional to 399,146.13, 550,821.66 and 272,043.76

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Solution

The fourth proportional to 399,146.13, 550,821.66 and 272,043.76 is: 375,420.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    399,146.13 : 550,821.66 = 272,043.76 : x
  2. Step 2: Convert to fraction form
    399,146.13/550,821.66 = 272,043.76/x
  3. Step 3: Cross multiply
    399,146.13x = 550,821.66 × 272,043.76
  4. Step 4: Simplify right side
    399,146.13x = 149,847,594,115.62
  5. Step 5: Solve for x
    x = 149,847,594,115.62/399,146.13
  6. Step 6: Final answer
    x = 375,420.39

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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.