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Finding the Fourth Proportional to 308,117.80, 462,176.70 and 217,916.20

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Solution

The fourth proportional to 308,117.80, 462,176.70 and 217,916.20 is: 326,874.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    308,117.80 : 462,176.70 = 217,916.20 : x
  2. Step 2: Convert to fraction form
    308,117.80/462,176.70 = 217,916.20/x
  3. Step 3: Cross multiply
    308,117.80x = 462,176.70 × 217,916.20
  4. Step 4: Simplify right side
    308,117.80x = 100,715,790,192.54
  5. Step 5: Solve for x
    x = 100,715,790,192.54/308,117.80
  6. Step 6: Final answer
    x = 326,874.30

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1.5x scale

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.