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Finding the Fourth Proportional to 309,407.67, 426,983.56 and 171,596.43

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Solution

The fourth proportional to 309,407.67, 426,983.56 and 171,596.43 is: 236,803.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    309,407.67 : 426,983.56 = 171,596.43 : x
  2. Step 2: Convert to fraction form
    309,407.67/426,983.56 = 171,596.43/x
  3. Step 3: Cross multiply
    309,407.67x = 426,983.56 × 171,596.43
  4. Step 4: Simplify right side
    309,407.67x = 73,268,854,135.70
  5. Step 5: Solve for x
    x = 73,268,854,135.70/309,407.67
  6. Step 6: Final answer
    x = 236,803.61

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.