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Finding the Fourth Proportional to 220,648.80, 304,470.98 and 123,830.45

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Solution

The fourth proportional to 220,648.80, 304,470.98 and 123,830.45 is: 170,872.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    220,648.80 : 304,470.98 = 123,830.45 : x
  2. Step 2: Convert to fraction form
    220,648.80/304,470.98 = 123,830.45/x
  3. Step 3: Cross multiply
    220,648.80x = 304,470.98 × 123,830.45
  4. Step 4: Simplify right side
    220,648.80x = 37,702,776,323.83
  5. Step 5: Solve for x
    x = 37,702,776,323.83/220,648.80
  6. Step 6: Final answer
    x = 170,872.34

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1.5x scale

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.