Home / 268,375.32-402,539.46-90,878.28

Finding the Fourth Proportional to 268,375.32, 402,539.46 and 90,878.28

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Solution

The fourth proportional to 268,375.32, 402,539.46 and 90,878.28 is: 136,309.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    268,375.32 : 402,539.46 = 90,878.28 : x
  2. Step 2: Convert to fraction form
    268,375.32/402,539.46 = 90,878.28/x
  3. Step 3: Cross multiply
    268,375.32x = 402,539.46 × 90,878.28
  4. Step 4: Simplify right side
    268,375.32x = 36,582,093,756.93
  5. Step 5: Solve for x
    x = 36,582,093,756.93/268,375.32
  6. Step 6: Final answer
    x = 136,309.46

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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.