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Finding the Fourth Proportional to 315,471.80, 473,207.70 and 189,500.60

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Solution

The fourth proportional to 315,471.80, 473,207.70 and 189,500.60 is: 284,250.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    315,471.80 : 473,207.70 = 189,500.60 : x
  2. Step 2: Convert to fraction form
    315,471.80/473,207.70 = 189,500.60/x
  3. Step 3: Cross multiply
    315,471.80x = 473,207.70 × 189,500.60
  4. Step 4: Simplify right side
    315,471.80x = 89,673,143,074.62
  5. Step 5: Solve for x
    x = 89,673,143,074.62/315,471.80
  6. Step 6: Final answer
    x = 284,250.90

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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.