Home / 268,308.76-402,521.22-81,334.36

Finding the Fourth Proportional to 268,308.76, 402,521.22 and 81,334.36

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Solution

The fourth proportional to 268,308.76, 402,521.22 and 81,334.36 is: 122,019.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    268,308.76 : 402,521.22 = 81,334.36 : x
  2. Step 2: Convert to fraction form
    268,308.76/402,521.22 = 81,334.36/x
  3. Step 3: Cross multiply
    268,308.76x = 402,521.22 × 81,334.36
  4. Step 4: Simplify right side
    268,308.76x = 32,738,805,815.12
  5. Step 5: Solve for x
    x = 32,738,805,815.12/268,308.76
  6. Step 6: Final answer
    x = 122,019.15

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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.