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Finding the Fourth Proportional to 265,256.28, 397,884.18 and 78,253.08

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Solution

The fourth proportional to 265,256.28, 397,884.18 and 78,253.08 is: 117,379.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    265,256.28 : 397,884.18 = 78,253.08 : x
  2. Step 2: Convert to fraction form
    265,256.28/397,884.18 = 78,253.08/x
  3. Step 3: Cross multiply
    265,256.28x = 397,884.18 × 78,253.08
  4. Step 4: Simplify right side
    265,256.28x = 31,135,662,568.27
  5. Step 5: Solve for x
    x = 31,135,662,568.27/265,256.28
  6. Step 6: Final answer
    x = 117,379.55

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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.