Home / 400,919.56-553,268.98-239,774.61

Finding the Fourth Proportional to 400,919.56, 553,268.98 and 239,774.61

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Solution

The fourth proportional to 400,919.56, 553,268.98 and 239,774.61 is: 330,888.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    400,919.56 : 553,268.98 = 239,774.61 : x
  2. Step 2: Convert to fraction form
    400,919.56/553,268.98 = 239,774.61/x
  3. Step 3: Cross multiply
    400,919.56x = 553,268.98 × 239,774.61
  4. Step 4: Simplify right side
    400,919.56x = 132,659,856,279.08
  5. Step 5: Solve for x
    x = 132,659,856,279.08/400,919.56
  6. Step 6: Final answer
    x = 330,888.96

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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.