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Finding the Fourth Proportional to 303,040.64, 454,560.72 and 81,424.64

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Solution

The fourth proportional to 303,040.64, 454,560.72 and 81,424.64 is: 122,136.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    303,040.64 : 454,560.72 = 81,424.64 : x
  2. Step 2: Convert to fraction form
    303,040.64/454,560.72 = 81,424.64/x
  3. Step 3: Cross multiply
    303,040.64x = 454,560.72 × 81,424.64
  4. Step 4: Simplify right side
    303,040.64x = 37,012,442,984.14
  5. Step 5: Solve for x
    x = 37,012,442,984.14/303,040.64
  6. Step 6: Final answer
    x = 122,136.90

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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.