Home / 268,986.10-403,479.15-81,973.30

Finding the Fourth Proportional to 268,986.10, 403,479.15 and 81,973.30

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Solution

The fourth proportional to 268,986.10, 403,479.15 and 81,973.30 is: 122,959.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    268,986.10 : 403,479.15 = 81,973.30 : x
  2. Step 2: Convert to fraction form
    268,986.10/403,479.15 = 81,973.30/x
  3. Step 3: Cross multiply
    268,986.10x = 403,479.15 × 81,973.30
  4. Step 4: Simplify right side
    268,986.10x = 33,074,517,406.70
  5. Step 5: Solve for x
    x = 33,074,517,406.70/268,986.10
  6. Step 6: Final answer
    x = 122,959.95

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1.5x scale

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.