Home / 268,931.80-403,397.70-81,943.30

Finding the Fourth Proportional to 268,931.80, 403,397.70 and 81,943.30

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Solution

The fourth proportional to 268,931.80, 403,397.70 and 81,943.30 is: 122,914.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    268,931.80 : 403,397.70 = 81,943.30 : x
  2. Step 2: Convert to fraction form
    268,931.80/403,397.70 = 81,943.30/x
  3. Step 3: Cross multiply
    268,931.80x = 403,397.70 × 81,943.30
  4. Step 4: Simplify right side
    268,931.80x = 33,055,738,750.41
  5. Step 5: Solve for x
    x = 33,055,738,750.41/268,931.80
  6. Step 6: Final answer
    x = 122,914.95

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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.