Home / 391,016.03-586,534.97-138,260.79

Finding the Fourth Proportional to 391,016.03, 586,534.97 and 138,260.79

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Solution

The fourth proportional to 391,016.03, 586,534.97 and 138,260.79 is: 207,395.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    391,016.03 : 586,534.97 = 138,260.79 : x
  2. Step 2: Convert to fraction form
    391,016.03/586,534.97 = 138,260.79/x
  3. Step 3: Cross multiply
    391,016.03x = 586,534.97 × 138,260.79
  4. Step 4: Simplify right side
    391,016.03x = 81,094,788,660.48
  5. Step 5: Solve for x
    x = 81,094,788,660.48/391,016.03
  6. Step 6: Final answer
    x = 207,395.05

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.