Home / 268,246.82-402,432.50-78,699.53

Finding the Fourth Proportional to 268,246.82, 402,432.50 and 78,699.53

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Solution

The fourth proportional to 268,246.82, 402,432.50 and 78,699.53 is: 118,067.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    268,246.82 : 402,432.50 = 78,699.53 : x
  2. Step 2: Convert to fraction form
    268,246.82/402,432.50 = 78,699.53/x
  3. Step 3: Cross multiply
    268,246.82x = 402,432.50 × 78,699.53
  4. Step 4: Simplify right side
    268,246.82x = 31,671,246,201.06
  5. Step 5: Solve for x
    x = 31,671,246,201.06/268,246.82
  6. Step 6: Final answer
    x = 118,067.56

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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.