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Finding the Fourth Proportional to 217,490.88, 300,153.84 and 120,713.04

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Solution

The fourth proportional to 217,490.88, 300,153.84 and 120,713.04 is: 166,593.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    217,490.88 : 300,153.84 = 120,713.04 : x
  2. Step 2: Convert to fraction form
    217,490.88/300,153.84 = 120,713.04/x
  3. Step 3: Cross multiply
    217,490.88x = 300,153.84 × 120,713.04
  4. Step 4: Simplify right side
    217,490.88x = 36,232,482,494.07
  5. Step 5: Solve for x
    x = 36,232,482,494.07/217,490.88
  6. Step 6: Final answer
    x = 166,593.11

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.