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Finding the Fourth Proportional to 309,191.01, 426,728.64 and 173,234.15

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Solution

The fourth proportional to 309,191.01, 426,728.64 and 173,234.15 is: 239,088.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    309,191.01 : 426,728.64 = 173,234.15 : x
  2. Step 2: Convert to fraction form
    309,191.01/426,728.64 = 173,234.15/x
  3. Step 3: Cross multiply
    309,191.01x = 426,728.64 × 173,234.15
  4. Step 4: Simplify right side
    309,191.01x = 73,923,970,664.33
  5. Step 5: Solve for x
    x = 73,923,970,664.33/309,191.01
  6. Step 6: Final answer
    x = 239,088.36

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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.