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Finding the Fourth Proportional to 154,708.80, 217,117.20 and 154,708.80

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Solution

The fourth proportional to 154,708.80, 217,117.20 and 154,708.80 is: 217,117.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,708.80 : 217,117.20 = 154,708.80 : x
  2. Step 2: Convert to fraction form
    154,708.80/217,117.20 = 154,708.80/x
  3. Step 3: Cross multiply
    154,708.80x = 217,117.20 × 154,708.80
  4. Step 4: Simplify right side
    154,708.80x = 33,589,941,471.36
  5. Step 5: Solve for x
    x = 33,589,941,471.36/154,708.80
  6. Step 6: Final answer
    x = 217,117.20

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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.