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Finding the Fourth Proportional to 318,906.10, 477,437.55 and 194,490.10

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Solution

The fourth proportional to 318,906.10, 477,437.55 and 194,490.10 is: 291,173.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    318,906.10 : 477,437.55 = 194,490.10 : x
  2. Step 2: Convert to fraction form
    318,906.10/477,437.55 = 194,490.10/x
  3. Step 3: Cross multiply
    318,906.10x = 477,437.55 × 194,490.10
  4. Step 4: Simplify right side
    318,906.10x = 92,856,876,843.26
  5. Step 5: Solve for x
    x = 92,856,876,843.26/318,906.10
  6. Step 6: Final answer
    x = 291,173.10

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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.