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Finding the Fourth Proportional to 268,473.27, 402,458.40 and 90,855.93

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Solution

The fourth proportional to 268,473.27, 402,458.40 and 90,855.93 is: 136,198.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    268,473.27 : 402,458.40 = 90,855.93 : x
  2. Step 2: Convert to fraction form
    268,473.27/402,458.40 = 90,855.93/x
  3. Step 3: Cross multiply
    268,473.27x = 402,458.40 × 90,855.93
  4. Step 4: Simplify right side
    268,473.27x = 36,565,732,218.31
  5. Step 5: Solve for x
    x = 36,565,732,218.31/268,473.27
  6. Step 6: Final answer
    x = 136,198.78

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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.