Home / 391,637.13-540,459.77-221,882.73

Finding the Fourth Proportional to 391,637.13, 540,459.77 and 221,882.73

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Solution

The fourth proportional to 391,637.13, 540,459.77 and 221,882.73 is: 306,198.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    391,637.13 : 540,459.77 = 221,882.73 : x
  2. Step 2: Convert to fraction form
    391,637.13/540,459.77 = 221,882.73/x
  3. Step 3: Cross multiply
    391,637.13x = 540,459.77 × 221,882.73
  4. Step 4: Simplify right side
    391,637.13x = 119,918,689,222.77
  5. Step 5: Solve for x
    x = 119,918,689,222.77/391,637.13
  6. Step 6: Final answer
    x = 306,198.47

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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.