Home / 268,111.13-402,222.07-78,577.71

Finding the Fourth Proportional to 268,111.13, 402,222.07 and 78,577.71

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Solution

The fourth proportional to 268,111.13, 402,222.07 and 78,577.71 is: 117,882.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    268,111.13 : 402,222.07 = 78,577.71 : x
  2. Step 2: Convert to fraction form
    268,111.13/402,222.07 = 78,577.71/x
  3. Step 3: Cross multiply
    268,111.13x = 402,222.07 × 78,577.71
  4. Step 4: Simplify right side
    268,111.13x = 31,605,687,761.95
  5. Step 5: Solve for x
    x = 31,605,687,761.95/268,111.13
  6. Step 6: Final answer
    x = 117,882.79

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1.5x scale

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.