Home / 321,935.10-482,902.65-85,301.70

Finding the Fourth Proportional to 321,935.10, 482,902.65 and 85,301.70

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Solution

The fourth proportional to 321,935.10, 482,902.65 and 85,301.70 is: 127,952.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    321,935.10 : 482,902.65 = 85,301.70 : x
  2. Step 2: Convert to fraction form
    321,935.10/482,902.65 = 85,301.70/x
  3. Step 3: Cross multiply
    321,935.10x = 482,902.65 × 85,301.70
  4. Step 4: Simplify right side
    321,935.10x = 41,192,416,979.51
  5. Step 5: Solve for x
    x = 41,192,416,979.51/321,935.10
  6. Step 6: Final answer
    x = 127,952.55

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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.