Home / 215,678.59-323,517.89-65,919.31

Finding the Fourth Proportional to 215,678.59, 323,517.89 and 65,919.31

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Solution

The fourth proportional to 215,678.59, 323,517.89 and 65,919.31 is: 98,878.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    215,678.59 : 323,517.89 = 65,919.31 : x
  2. Step 2: Convert to fraction form
    215,678.59/323,517.89 = 65,919.31/x
  3. Step 3: Cross multiply
    215,678.59x = 323,517.89 × 65,919.31
  4. Step 4: Simplify right side
    215,678.59x = 21,326,076,081.46
  5. Step 5: Solve for x
    x = 21,326,076,081.46/215,678.59
  6. Step 6: Final answer
    x = 98,878.97

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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.