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Finding the Fourth Proportional to 443,272.88, 665,002.73 and 143,730.11

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Solution

The fourth proportional to 443,272.88, 665,002.73 and 143,730.11 is: 215,625.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    443,272.88 : 665,002.73 = 143,730.11 : x
  2. Step 2: Convert to fraction form
    443,272.88/665,002.73 = 143,730.11/x
  3. Step 3: Cross multiply
    443,272.88x = 665,002.73 × 143,730.11
  4. Step 4: Simplify right side
    443,272.88x = 95,580,911,489.54
  5. Step 5: Solve for x
    x = 95,580,911,489.54/443,272.88
  6. Step 6: Final answer
    x = 215,625.45

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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.