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Finding the Fourth Proportional to 311,616.36, 467,425.62 and 90,000.36

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Solution

The fourth proportional to 311,616.36, 467,425.62 and 90,000.36 is: 135,000.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    311,616.36 : 467,425.62 = 90,000.36 : x
  2. Step 2: Convert to fraction form
    311,616.36/467,425.62 = 90,000.36/x
  3. Step 3: Cross multiply
    311,616.36x = 467,425.62 × 90,000.36
  4. Step 4: Simplify right side
    311,616.36x = 42,068,474,073.22
  5. Step 5: Solve for x
    x = 42,068,474,073.22/311,616.36
  6. Step 6: Final answer
    x = 135,000.85

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1.5x scale

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.