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Finding the Fourth Proportional to 310,321.26, 465,472.58 and 85,695.39

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Solution

The fourth proportional to 310,321.26, 465,472.58 and 85,695.39 is: 128,540.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    310,321.26 : 465,472.58 = 85,695.39 : x
  2. Step 2: Convert to fraction form
    310,321.26/465,472.58 = 85,695.39/x
  3. Step 3: Cross multiply
    310,321.26x = 465,472.58 × 85,695.39
  4. Step 4: Simplify right side
    310,321.26x = 39,888,853,848.93
  5. Step 5: Solve for x
    x = 39,888,853,848.93/310,321.26
  6. Step 6: Final answer
    x = 128,540.51

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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.