Home / 268,214.20-402,065.30-99,689.40

Finding the Fourth Proportional to 268,214.20, 402,065.30 and 99,689.40

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Solution

The fourth proportional to 268,214.20, 402,065.30 and 99,689.40 is: 149,438.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    268,214.20 : 402,065.30 = 99,689.40 : x
  2. Step 2: Convert to fraction form
    268,214.20/402,065.30 = 99,689.40/x
  3. Step 3: Cross multiply
    268,214.20x = 402,065.30 × 99,689.40
  4. Step 4: Simplify right side
    268,214.20x = 40,081,648,517.82
  5. Step 5: Solve for x
    x = 40,081,648,517.82/268,214.20
  6. Step 6: Final answer
    x = 149,438.95

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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.