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Finding the Fourth Proportional to 486,991.29, 672,034.98 and 272,133.12

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Solution

The fourth proportional to 486,991.29, 672,034.98 and 272,133.12 is: 375,536.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    486,991.29 : 672,034.98 = 272,133.12 : x
  2. Step 2: Convert to fraction form
    486,991.29/672,034.98 = 272,133.12/x
  3. Step 3: Cross multiply
    486,991.29x = 672,034.98 × 272,133.12
  4. Step 4: Simplify right side
    486,991.29x = 182,882,975,856.54
  5. Step 5: Solve for x
    x = 182,882,975,856.54/486,991.29
  6. Step 6: Final answer
    x = 375,536.44

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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.