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Finding the Fourth Proportional to 155,108.20, 217,446.73 and 155,108.20

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Solution

The fourth proportional to 155,108.20, 217,446.73 and 155,108.20 is: 217,446.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    155,108.20 : 217,446.73 = 155,108.20 : x
  2. Step 2: Convert to fraction form
    155,108.20/217,446.73 = 155,108.20/x
  3. Step 3: Cross multiply
    155,108.20x = 217,446.73 × 155,108.20
  4. Step 4: Simplify right side
    155,108.20x = 33,727,770,886.19
  5. Step 5: Solve for x
    x = 33,727,770,886.19/155,108.20
  6. Step 6: Final answer
    x = 217,446.73

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.