Home / 287,740.20-431,734.68-154,464.82

Finding the Fourth Proportional to 287,740.20, 431,734.68 and 154,464.82

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Solution

The fourth proportional to 287,740.20, 431,734.68 and 154,464.82 is: 231,764.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,740.20 : 431,734.68 = 154,464.82 : x
  2. Step 2: Convert to fraction form
    287,740.20/431,734.68 = 154,464.82/x
  3. Step 3: Cross multiply
    287,740.20x = 431,734.68 × 154,464.82
  4. Step 4: Simplify right side
    287,740.20x = 66,687,819,633.96
  5. Step 5: Solve for x
    x = 66,687,819,633.96/287,740.20
  6. Step 6: Final answer
    x = 231,764.00

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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.