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Finding the Fourth Proportional to 320,691.02, 480,959.96 and 95,991.15

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Solution

The fourth proportional to 320,691.02, 480,959.96 and 95,991.15 is: 143,963.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    320,691.02 : 480,959.96 = 95,991.15 : x
  2. Step 2: Convert to fraction form
    320,691.02/480,959.96 = 95,991.15/x
  3. Step 3: Cross multiply
    320,691.02x = 480,959.96 × 95,991.15
  4. Step 4: Simplify right side
    320,691.02x = 46,167,899,184.40
  5. Step 5: Solve for x
    x = 46,167,899,184.40/320,691.02
  6. Step 6: Final answer
    x = 143,963.80

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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.