Home / 220,018,921.43-330,028,443.29-81,826,472.61

Finding the Fourth Proportional to 220,018,921.43, 330,028,443.29 and 81,826,472.61

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Solution

The fourth proportional to 220,018,921.43, 330,028,443.29 and 81,826,472.61 is: 122,739,731.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    220,018,921.43 : 330,028,443.29 = 81,826,472.61 : x
  2. Step 2: Convert to fraction form
    220,018,921.43/330,028,443.29 = 81,826,472.61/x
  3. Step 3: Cross multiply
    220,018,921.43x = 330,028,443.29 × 81,826,472.61
  4. Step 4: Simplify right side
    220,018,921.43x = 27,005,063,375,594,692
  5. Step 5: Solve for x
    x = 27,005,063,375,594,692/220,018,921.43
  6. Step 6: Final answer
    x = 122,739,731.66

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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.