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Finding the Fourth Proportional to 317,996.81, 477,213.92 and 131,008.31

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Solution

The fourth proportional to 317,996.81, 477,213.92 and 131,008.31 is: 196,602.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    317,996.81 : 477,213.92 = 131,008.31 : x
  2. Step 2: Convert to fraction form
    317,996.81/477,213.92 = 131,008.31/x
  3. Step 3: Cross multiply
    317,996.81x = 477,213.92 × 131,008.31
  4. Step 4: Simplify right side
    317,996.81x = 62,518,990,196.95
  5. Step 5: Solve for x
    x = 62,518,990,196.95/317,996.81
  6. Step 6: Final answer
    x = 196,602.57

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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.