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Finding the Fourth Proportional to 480,745.48, 721,136.22 and 143,790.52

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Solution

The fourth proportional to 480,745.48, 721,136.22 and 143,790.52 is: 215,691.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    480,745.48 : 721,136.22 = 143,790.52 : x
  2. Step 2: Convert to fraction form
    480,745.48/721,136.22 = 143,790.52/x
  3. Step 3: Cross multiply
    480,745.48x = 721,136.22 × 143,790.52
  4. Step 4: Simplify right side
    480,745.48x = 103,692,552,064.63
  5. Step 5: Solve for x
    x = 103,692,552,064.63/480,745.48
  6. Step 6: Final answer
    x = 215,691.16

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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.