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Finding the Fourth Proportional to 303,039.64, 454,559.22 and 81,423.64

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Solution

The fourth proportional to 303,039.64, 454,559.22 and 81,423.64 is: 122,135.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    303,039.64 : 454,559.22 = 81,423.64 : x
  2. Step 2: Convert to fraction form
    303,039.64/454,559.22 = 81,423.64/x
  3. Step 3: Cross multiply
    303,039.64x = 454,559.22 × 81,423.64
  4. Step 4: Simplify right side
    303,039.64x = 37,011,866,287.96
  5. Step 5: Solve for x
    x = 37,011,866,287.96/303,039.64
  6. Step 6: Final answer
    x = 122,135.40

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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.