Home / 281,278.22-421,851.69-81,545.00

Finding the Fourth Proportional to 281,278.22, 421,851.69 and 81,545.00

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Solution

The fourth proportional to 281,278.22, 421,851.69 and 81,545.00 is: 122,298.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    281,278.22 : 421,851.69 = 81,545.00 : x
  2. Step 2: Convert to fraction form
    281,278.22/421,851.69 = 81,545.00/x
  3. Step 3: Cross multiply
    281,278.22x = 421,851.69 × 81,545.00
  4. Step 4: Simplify right side
    281,278.22x = 34,399,893,951.79
  5. Step 5: Solve for x
    x = 34,399,893,951.79/281,278.22
  6. Step 6: Final answer
    x = 122,298.47

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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.