Home / 268,454.96-402,682.53-78,915.33

Finding the Fourth Proportional to 268,454.96, 402,682.53 and 78,915.33

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Solution

The fourth proportional to 268,454.96, 402,682.53 and 78,915.33 is: 118,373.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    268,454.96 : 402,682.53 = 78,915.33 : x
  2. Step 2: Convert to fraction form
    268,454.96/402,682.53 = 78,915.33/x
  3. Step 3: Cross multiply
    268,454.96x = 402,682.53 × 78,915.33
  4. Step 4: Simplify right side
    268,454.96x = 31,777,824,740.18
  5. Step 5: Solve for x
    x = 31,777,824,740.18/268,454.96
  6. Step 6: Final answer
    x = 118,373.02

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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.