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Finding the Fourth Proportional to 223,438.80, 335,158.20 and 143,722.65

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Solution

The fourth proportional to 223,438.80, 335,158.20 and 143,722.65 is: 215,583.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    223,438.80 : 335,158.20 = 143,722.65 : x
  2. Step 2: Convert to fraction form
    223,438.80/335,158.20 = 143,722.65/x
  3. Step 3: Cross multiply
    223,438.80x = 335,158.20 × 143,722.65
  4. Step 4: Simplify right side
    223,438.80x = 48,169,824,673.23
  5. Step 5: Solve for x
    x = 48,169,824,673.23/223,438.80
  6. Step 6: Final answer
    x = 215,583.98

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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.