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Finding the Fourth Proportional to 253,814.79, 380,454.27 and 85,175.22

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Solution

The fourth proportional to 253,814.79, 380,454.27 and 85,175.22 is: 127,672.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    253,814.79 : 380,454.27 = 85,175.22 : x
  2. Step 2: Convert to fraction form
    253,814.79/380,454.27 = 85,175.22/x
  3. Step 3: Cross multiply
    253,814.79x = 380,454.27 × 85,175.22
  4. Step 4: Simplify right side
    253,814.79x = 32,405,276,147.19
  5. Step 5: Solve for x
    x = 32,405,276,147.19/253,814.79
  6. Step 6: Final answer
    x = 127,672.92

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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.