Home / 308,979.90-463,642.65-131,456.70

Finding the Fourth Proportional to 308,979.90, 463,642.65 and 131,456.70

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Solution

The fourth proportional to 308,979.90, 463,642.65 and 131,456.70 is: 197,258.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    308,979.90 : 463,642.65 = 131,456.70 : x
  2. Step 2: Convert to fraction form
    308,979.90/463,642.65 = 131,456.70/x
  3. Step 3: Cross multiply
    308,979.90x = 463,642.65 × 131,456.70
  4. Step 4: Simplify right side
    308,979.90x = 60,948,932,748.26
  5. Step 5: Solve for x
    x = 60,948,932,748.26/308,979.90
  6. Step 6: Final answer
    x = 197,258.57

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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.