Home / 279,738.18-386,184.90-218,352.74

Finding the Fourth Proportional to 279,738.18, 386,184.90 and 218,352.74

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Solution

The fourth proportional to 279,738.18, 386,184.90 and 218,352.74 is: 301,440.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,738.18 : 386,184.90 = 218,352.74 : x
  2. Step 2: Convert to fraction form
    279,738.18/386,184.90 = 218,352.74/x
  3. Step 3: Cross multiply
    279,738.18x = 386,184.90 × 218,352.74
  4. Step 4: Simplify right side
    279,738.18x = 84,324,531,061.63
  5. Step 5: Solve for x
    x = 84,324,531,061.63/279,738.18
  6. Step 6: Final answer
    x = 301,440.91

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.