Home / 268,454.17-402,681.37-78,914.55

Finding the Fourth Proportional to 268,454.17, 402,681.37 and 78,914.55

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Solution

The fourth proportional to 268,454.17, 402,681.37 and 78,914.55 is: 118,371.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    268,454.17 : 402,681.37 = 78,914.55 : x
  2. Step 2: Convert to fraction form
    268,454.17/402,681.37 = 78,914.55/x
  3. Step 3: Cross multiply
    268,454.17x = 402,681.37 × 78,914.55
  4. Step 4: Simplify right side
    268,454.17x = 31,777,418,909.65
  5. Step 5: Solve for x
    x = 31,777,418,909.65/268,454.17
  6. Step 6: Final answer
    x = 118,371.86

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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.