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Finding the Fourth Proportional to 443,489.97, 665,225.55 and 143,970.11

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Solution

The fourth proportional to 443,489.97, 665,225.55 and 143,970.11 is: 215,952.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    443,489.97 : 665,225.55 = 143,970.11 : x
  2. Step 2: Convert to fraction form
    443,489.97/665,225.55 = 143,970.11/x
  3. Step 3: Cross multiply
    443,489.97x = 665,225.55 × 143,970.11
  4. Step 4: Simplify right side
    443,489.97x = 95,772,592,282.18
  5. Step 5: Solve for x
    x = 95,772,592,282.18/443,489.97
  6. Step 6: Final answer
    x = 215,952.10

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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.