Home / 220,018,919.18-330,028,439.92-81,826,470.36

Finding the Fourth Proportional to 220,018,919.18, 330,028,439.92 and 81,826,470.36

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Solution

The fourth proportional to 220,018,919.18, 330,028,439.92 and 81,826,470.36 is: 122,739,728.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    220,018,919.18 : 330,028,439.92 = 81,826,470.36 : x
  2. Step 2: Convert to fraction form
    220,018,919.18/330,028,439.92 = 81,826,470.36/x
  3. Step 3: Cross multiply
    220,018,919.18x = 330,028,439.92 × 81,826,470.36
  4. Step 4: Simplify right side
    220,018,919.18x = 27,005,062,356,866,356
  5. Step 5: Solve for x
    x = 27,005,062,356,866,356/220,018,919.18
  6. Step 6: Final answer
    x = 122,739,728.28

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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.