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Finding the Fourth Proportional to 319,722.86, 479,659.32 and 95,085.16

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Solution

The fourth proportional to 319,722.86, 479,659.32 and 95,085.16 is: 142,650.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    319,722.86 : 479,659.32 = 95,085.16 : x
  2. Step 2: Convert to fraction form
    319,722.86/479,659.32 = 95,085.16/x
  3. Step 3: Cross multiply
    319,722.86x = 479,659.32 × 95,085.16
  4. Step 4: Simplify right side
    319,722.86x = 45,608,481,988.54
  5. Step 5: Solve for x
    x = 45,608,481,988.54/319,722.86
  6. Step 6: Final answer
    x = 142,650.05

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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.