Home / 268,254.24-402,443.64-78,706.95

Finding the Fourth Proportional to 268,254.24, 402,443.64 and 78,706.95

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Solution

The fourth proportional to 268,254.24, 402,443.64 and 78,706.95 is: 118,078.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    268,254.24 : 402,443.64 = 78,706.95 : x
  2. Step 2: Convert to fraction form
    268,254.24/402,443.64 = 78,706.95/x
  3. Step 3: Cross multiply
    268,254.24x = 402,443.64 × 78,706.95
  4. Step 4: Simplify right side
    268,254.24x = 31,675,111,451.30
  5. Step 5: Solve for x
    x = 31,675,111,451.30/268,254.24
  6. Step 6: Final answer
    x = 118,078.70

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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.