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Finding the Fourth Proportional to 154,585.80, 217,042.20 and 154,585.80

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Solution

The fourth proportional to 154,585.80, 217,042.20 and 154,585.80 is: 217,042.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,585.80 : 217,042.20 = 154,585.80 : x
  2. Step 2: Convert to fraction form
    154,585.80/217,042.20 = 154,585.80/x
  3. Step 3: Cross multiply
    154,585.80x = 217,042.20 × 154,585.80
  4. Step 4: Simplify right side
    154,585.80x = 33,551,642,120.76
  5. Step 5: Solve for x
    x = 33,551,642,120.76/154,585.80
  6. Step 6: Final answer
    x = 217,042.20

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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.