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Finding the Fourth Proportional to 303,313.88, 454,931.17 and 90,077.40

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Solution

The fourth proportional to 303,313.88, 454,931.17 and 90,077.40 is: 135,104.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    303,313.88 : 454,931.17 = 90,077.40 : x
  2. Step 2: Convert to fraction form
    303,313.88/454,931.17 = 90,077.40/x
  3. Step 3: Cross multiply
    303,313.88x = 454,931.17 × 90,077.40
  4. Step 4: Simplify right side
    303,313.88x = 40,979,016,747.36
  5. Step 5: Solve for x
    x = 40,979,016,747.36/303,313.88
  6. Step 6: Final answer
    x = 135,104.32

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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.