Home / 281,280.09-421,854.50-81,546.87

Finding the Fourth Proportional to 281,280.09, 421,854.50 and 81,546.87

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Solution

The fourth proportional to 281,280.09, 421,854.50 and 81,546.87 is: 122,301.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    281,280.09 : 421,854.50 = 81,546.87 : x
  2. Step 2: Convert to fraction form
    281,280.09/421,854.50 = 81,546.87/x
  3. Step 3: Cross multiply
    281,280.09x = 421,854.50 × 81,546.87
  4. Step 4: Simplify right side
    281,280.09x = 34,400,913,662.68
  5. Step 5: Solve for x
    x = 34,400,913,662.68/281,280.09
  6. Step 6: Final answer
    x = 122,301.28

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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.