Home / 281,023.74-421,489.49-121,056.30

Finding the Fourth Proportional to 281,023.74, 421,489.49 and 121,056.30

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Solution

The fourth proportional to 281,023.74, 421,489.49 and 121,056.30 is: 181,564.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    281,023.74 : 421,489.49 = 121,056.30 : x
  2. Step 2: Convert to fraction form
    281,023.74/421,489.49 = 121,056.30/x
  3. Step 3: Cross multiply
    281,023.74x = 421,489.49 × 121,056.30
  4. Step 4: Simplify right side
    281,023.74x = 51,023,957,543.01
  5. Step 5: Solve for x
    x = 51,023,957,543.01/281,023.74
  6. Step 6: Final answer
    x = 181,564.58

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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.