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Finding the Fourth Proportional to 443,267.18, 664,994.18 and 143,724.40

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Solution

The fourth proportional to 443,267.18, 664,994.18 and 143,724.40 is: 215,616.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    443,267.18 : 664,994.18 = 143,724.40 : x
  2. Step 2: Convert to fraction form
    443,267.18/664,994.18 = 143,724.40/x
  3. Step 3: Cross multiply
    443,267.18x = 664,994.18 × 143,724.40
  4. Step 4: Simplify right side
    443,267.18x = 95,575,888,805.37
  5. Step 5: Solve for x
    x = 95,575,888,805.37/443,267.18
  6. Step 6: Final answer
    x = 215,616.89

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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.