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Finding the Fourth Proportional to 319,808.60, 479,629.28 and 95,108.52

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Solution

The fourth proportional to 319,808.60, 479,629.28 and 95,108.52 is: 142,637.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    319,808.60 : 479,629.28 = 95,108.52 : x
  2. Step 2: Convert to fraction form
    319,808.60/479,629.28 = 95,108.52/x
  3. Step 3: Cross multiply
    319,808.60x = 479,629.28 × 95,108.52
  4. Step 4: Simplify right side
    319,808.60x = 45,616,830,969.47
  5. Step 5: Solve for x
    x = 45,616,830,969.47/319,808.60
  6. Step 6: Final answer
    x = 142,637.91

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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.