Home / 354,231,889.98-489,016,986.96-220,312,972.11

Finding the Fourth Proportional to 354,231,889.98, 489,016,986.96 and 220,312,972.11

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Solution

The fourth proportional to 354,231,889.98, 489,016,986.96 and 220,312,972.11 is: 304,141,972.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    354,231,889.98 : 489,016,986.96 = 220,312,972.11 : x
  2. Step 2: Convert to fraction form
    354,231,889.98/489,016,986.96 = 220,312,972.11/x
  3. Step 3: Cross multiply
    354,231,889.98x = 489,016,986.96 × 220,312,972.11
  4. Step 4: Simplify right side
    354,231,889.98x = 107,736,785,809,434,720
  5. Step 5: Solve for x
    x = 107,736,785,809,434,720/354,231,889.98
  6. Step 6: Final answer
    x = 304,141,972.69

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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.