Home / 268,305.76-402,516.72-81,331.36

Finding the Fourth Proportional to 268,305.76, 402,516.72 and 81,331.36

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Solution

The fourth proportional to 268,305.76, 402,516.72 and 81,331.36 is: 122,014.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    268,305.76 : 402,516.72 = 81,331.36 : x
  2. Step 2: Convert to fraction form
    268,305.76/402,516.72 = 81,331.36/x
  3. Step 3: Cross multiply
    268,305.76x = 402,516.72 × 81,331.36
  4. Step 4: Simplify right side
    268,305.76x = 32,737,232,260.34
  5. Step 5: Solve for x
    x = 32,737,232,260.34/268,305.76
  6. Step 6: Final answer
    x = 122,014.65

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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.