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Finding the Fourth Proportional to 303,011.20, 454,516.80 and 134,531.20

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Solution

The fourth proportional to 303,011.20, 454,516.80 and 134,531.20 is: 201,796.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    303,011.20 : 454,516.80 = 134,531.20 : x
  2. Step 2: Convert to fraction form
    303,011.20/454,516.80 = 134,531.20/x
  3. Step 3: Cross multiply
    303,011.20x = 454,516.80 × 134,531.20
  4. Step 4: Simplify right side
    303,011.20x = 61,146,690,524.16
  5. Step 5: Solve for x
    x = 61,146,690,524.16/303,011.20
  6. Step 6: Final answer
    x = 201,796.80

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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.