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Finding the Fourth Proportional to 443,267.61, 664,994.84 and 143,724.84

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Solution

The fourth proportional to 443,267.61, 664,994.84 and 143,724.84 is: 215,617.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    443,267.61 : 664,994.84 = 143,724.84 : x
  2. Step 2: Convert to fraction form
    443,267.61/664,994.84 = 143,724.84/x
  3. Step 3: Cross multiply
    443,267.61x = 664,994.84 × 143,724.84
  4. Step 4: Simplify right side
    443,267.61x = 95,576,276,261.20
  5. Step 5: Solve for x
    x = 95,576,276,261.20/443,267.61
  6. Step 6: Final answer
    x = 215,617.55

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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.