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Finding the Fourth Proportional to 281,501.20, 422,323.80 and 198,557.20

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Solution

The fourth proportional to 281,501.20, 422,323.80 and 198,557.20 is: 297,886.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    281,501.20 : 422,323.80 = 198,557.20 : x
  2. Step 2: Convert to fraction form
    281,501.20/422,323.80 = 198,557.20/x
  3. Step 3: Cross multiply
    281,501.20x = 422,323.80 × 198,557.20
  4. Step 4: Simplify right side
    281,501.20x = 83,855,431,221.36
  5. Step 5: Solve for x
    x = 83,855,431,221.36/281,501.20
  6. Step 6: Final answer
    x = 297,886.59

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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.