Home / 268,257.93-402,449.21-78,710.64

Finding the Fourth Proportional to 268,257.93, 402,449.21 and 78,710.64

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Solution

The fourth proportional to 268,257.93, 402,449.21 and 78,710.64 is: 118,084.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    268,257.93 : 402,449.21 = 78,710.64 : x
  2. Step 2: Convert to fraction form
    268,257.93/402,449.21 = 78,710.64/x
  3. Step 3: Cross multiply
    268,257.93x = 402,449.21 × 78,710.64
  4. Step 4: Simplify right side
    268,257.93x = 31,677,034,886.59
  5. Step 5: Solve for x
    x = 31,677,034,886.59/268,257.93
  6. Step 6: Final answer
    x = 118,084.24

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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.