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Finding the Fourth Proportional to 256,499.70, 384,791.67 and 79,006.74

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Solution

The fourth proportional to 256,499.70, 384,791.67 and 79,006.74 is: 118,523.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    256,499.70 : 384,791.67 = 79,006.74 : x
  2. Step 2: Convert to fraction form
    256,499.70/384,791.67 = 79,006.74/x
  3. Step 3: Cross multiply
    256,499.70x = 384,791.67 × 79,006.74
  4. Step 4: Simplify right side
    256,499.70x = 30,401,135,425.86
  5. Step 5: Solve for x
    x = 30,401,135,425.86/256,499.70
  6. Step 6: Final answer
    x = 118,523.08

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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.