Home / 281,331-422,033.55-91,724.78

Finding the Fourth Proportional to 281,331, 422,033.55 and 91,724.78

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Solution

The fourth proportional to 281,331, 422,033.55 and 91,724.78 is: 137,599.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    281,331 : 422,033.55 = 91,724.78 : x
  2. Step 2: Convert to fraction form
    281,331/422,033.55 = 91,724.78/x
  3. Step 3: Cross multiply
    281,331x = 422,033.55 × 91,724.78
  4. Step 4: Simplify right side
    281,331x = 38,710,934,526.37
  5. Step 5: Solve for x
    x = 38,710,934,526.37/281,331
  6. Step 6: Final answer
    x = 137,599.25

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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.