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Finding the Fourth Proportional to 398,727.39, 550,257.50 and 226,652.58

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Solution

The fourth proportional to 398,727.39, 550,257.50 and 226,652.58 is: 312,788.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    398,727.39 : 550,257.50 = 226,652.58 : x
  2. Step 2: Convert to fraction form
    398,727.39/550,257.50 = 226,652.58/x
  3. Step 3: Cross multiply
    398,727.39x = 550,257.50 × 226,652.58
  4. Step 4: Simplify right side
    398,727.39x = 124,717,282,605.98
  5. Step 5: Solve for x
    x = 124,717,282,605.98/398,727.39
  6. Step 6: Final answer
    x = 312,788.35

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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.