Home / 268,212.20-402,062.30-99,687.40

Finding the Fourth Proportional to 268,212.20, 402,062.30 and 99,687.40

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Solution

The fourth proportional to 268,212.20, 402,062.30 and 99,687.40 is: 149,435.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    268,212.20 : 402,062.30 = 99,687.40 : x
  2. Step 2: Convert to fraction form
    268,212.20/402,062.30 = 99,687.40/x
  3. Step 3: Cross multiply
    268,212.20x = 402,062.30 × 99,687.40
  4. Step 4: Simplify right side
    268,212.20x = 40,080,545,325.02
  5. Step 5: Solve for x
    x = 40,080,545,325.02/268,212.20
  6. Step 6: Final answer
    x = 149,435.95

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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.