Home / 421,001.82-631,077.21-181,272.06

Finding the Fourth Proportional to 421,001.82, 631,077.21 and 181,272.06

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Solution

The fourth proportional to 421,001.82, 631,077.21 and 181,272.06 is: 271,724.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    421,001.82 : 631,077.21 = 181,272.06 : x
  2. Step 2: Convert to fraction form
    421,001.82/631,077.21 = 181,272.06/x
  3. Step 3: Cross multiply
    421,001.82x = 631,077.21 × 181,272.06
  4. Step 4: Simplify right side
    421,001.82x = 114,396,665,875.75
  5. Step 5: Solve for x
    x = 114,396,665,875.75/421,001.82
  6. Step 6: Final answer
    x = 271,724.87

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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.