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Finding the Fourth Proportional to 220,291.80, 303,998.92 and 119,689.08

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Solution

The fourth proportional to 220,291.80, 303,998.92 and 119,689.08 is: 165,168.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    220,291.80 : 303,998.92 = 119,689.08 : x
  2. Step 2: Convert to fraction form
    220,291.80/303,998.92 = 119,689.08/x
  3. Step 3: Cross multiply
    220,291.80x = 303,998.92 × 119,689.08
  4. Step 4: Simplify right side
    220,291.80x = 36,385,351,055.79
  5. Step 5: Solve for x
    x = 36,385,351,055.79/220,291.80
  6. Step 6: Final answer
    x = 165,168.89

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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.