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Finding the Fourth Proportional to 313,728.92, 433,008.72 and 186,379.88

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Solution

The fourth proportional to 313,728.92, 433,008.72 and 186,379.88 is: 257,241.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    313,728.92 : 433,008.72 = 186,379.88 : x
  2. Step 2: Convert to fraction form
    313,728.92/433,008.72 = 186,379.88/x
  3. Step 3: Cross multiply
    313,728.92x = 433,008.72 × 186,379.88
  4. Step 4: Simplify right side
    313,728.92x = 80,704,113,272.55
  5. Step 5: Solve for x
    x = 80,704,113,272.55/313,728.92
  6. Step 6: Final answer
    x = 257,241.55

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.