Home / 399,145.13-550,820.27-272,042.76

Finding the Fourth Proportional to 399,145.13, 550,820.27 and 272,042.76

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Solution

The fourth proportional to 399,145.13, 550,820.27 and 272,042.76 is: 375,419.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    399,145.13 : 550,820.27 = 272,042.76 : x
  2. Step 2: Convert to fraction form
    399,145.13/550,820.27 = 272,042.76/x
  3. Step 3: Cross multiply
    399,145.13x = 550,820.27 × 272,042.76
  4. Step 4: Simplify right side
    399,145.13x = 149,846,667,194.85
  5. Step 5: Solve for x
    x = 149,846,667,194.85/399,145.13
  6. Step 6: Final answer
    x = 375,419.01

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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.