Home / 220,708.98-304,557.32-123,890.66

Finding the Fourth Proportional to 220,708.98, 304,557.32 and 123,890.66

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Solution

The fourth proportional to 220,708.98, 304,557.32 and 123,890.66 is: 170,957.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    220,708.98 : 304,557.32 = 123,890.66 : x
  2. Step 2: Convert to fraction form
    220,708.98/304,557.32 = 123,890.66/x
  3. Step 3: Cross multiply
    220,708.98x = 304,557.32 × 123,890.66
  4. Step 4: Simplify right side
    220,708.98x = 37,731,805,240.39
  5. Step 5: Solve for x
    x = 37,731,805,240.39/220,708.98
  6. Step 6: Final answer
    x = 170,957.27

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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.