Home / 268,057.12-402,074.88-68,382.40

Finding the Fourth Proportional to 268,057.12, 402,074.88 and 68,382.40

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Solution

The fourth proportional to 268,057.12, 402,074.88 and 68,382.40 is: 102,570.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    268,057.12 : 402,074.88 = 68,382.40 : x
  2. Step 2: Convert to fraction form
    268,057.12/402,074.88 = 68,382.40/x
  3. Step 3: Cross multiply
    268,057.12x = 402,074.88 × 68,382.40
  4. Step 4: Simplify right side
    268,057.12x = 27,494,845,274.11
  5. Step 5: Solve for x
    x = 27,494,845,274.11/268,057.12
  6. Step 6: Final answer
    x = 102,570.84

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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.