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Finding the Fourth Proportional to 319,791.36, 479,643.32 and 95,186.46

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Solution

The fourth proportional to 319,791.36, 479,643.32 and 95,186.46 is: 142,766.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    319,791.36 : 479,643.32 = 95,186.46 : x
  2. Step 2: Convert to fraction form
    319,791.36/479,643.32 = 95,186.46/x
  3. Step 3: Cross multiply
    319,791.36x = 479,643.32 × 95,186.46
  4. Step 4: Simplify right side
    319,791.36x = 45,655,549,693.45
  5. Step 5: Solve for x
    x = 45,655,549,693.45/319,791.36
  6. Step 6: Final answer
    x = 142,766.68

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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.