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Finding the Fourth Proportional to 443,492.97, 665,230.04 and 143,973.12

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Solution

The fourth proportional to 443,492.97, 665,230.04 and 143,973.12 is: 215,956.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    443,492.97 : 665,230.04 = 143,973.12 : x
  2. Step 2: Convert to fraction form
    443,492.97/665,230.04 = 143,973.12/x
  3. Step 3: Cross multiply
    443,492.97x = 665,230.04 × 143,973.12
  4. Step 4: Simplify right side
    443,492.97x = 95,775,243,656.66
  5. Step 5: Solve for x
    x = 95,775,243,656.66/443,492.97
  6. Step 6: Final answer
    x = 215,956.62

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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.