Home / 268,249.24-402,436.14-78,701.95

Finding the Fourth Proportional to 268,249.24, 402,436.14 and 78,701.95

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Solution

The fourth proportional to 268,249.24, 402,436.14 and 78,701.95 is: 118,071.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    268,249.24 : 402,436.14 = 78,701.95 : x
  2. Step 2: Convert to fraction form
    268,249.24/402,436.14 = 78,701.95/x
  3. Step 3: Cross multiply
    268,249.24x = 402,436.14 × 78,701.95
  4. Step 4: Simplify right side
    268,249.24x = 31,672,507,962.38
  5. Step 5: Solve for x
    x = 31,672,507,962.38/268,249.24
  6. Step 6: Final answer
    x = 118,071.19

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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.