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Finding the Fourth Proportional to 265,467.43, 398,189.55 and 85,548.85

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Solution

The fourth proportional to 265,467.43, 398,189.55 and 85,548.85 is: 128,319.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    265,467.43 : 398,189.55 = 85,548.85 : x
  2. Step 2: Convert to fraction form
    265,467.43/398,189.55 = 85,548.85/x
  3. Step 3: Cross multiply
    265,467.43x = 398,189.55 × 85,548.85
  4. Step 4: Simplify right side
    265,467.43x = 34,064,658,084.52
  5. Step 5: Solve for x
    x = 34,064,658,084.52/265,467.43
  6. Step 6: Final answer
    x = 128,319.54

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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.