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Finding the Fourth Proportional to 253,544.85, 380,255.01 and 85,061.40

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Solution

The fourth proportional to 253,544.85, 380,255.01 and 85,061.40 is: 127,571.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    253,544.85 : 380,255.01 = 85,061.40 : x
  2. Step 2: Convert to fraction form
    253,544.85/380,255.01 = 85,061.40/x
  3. Step 3: Cross multiply
    253,544.85x = 380,255.01 × 85,061.40
  4. Step 4: Simplify right side
    253,544.85x = 32,345,023,507.61
  5. Step 5: Solve for x
    x = 32,345,023,507.61/253,544.85
  6. Step 6: Final answer
    x = 127,571.21

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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.