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Finding the Fourth Proportional to 442,874.80, 664,409.40 and 143,304.40

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Solution

The fourth proportional to 442,874.80, 664,409.40 and 143,304.40 is: 214,988.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    442,874.80 : 664,409.40 = 143,304.40 : x
  2. Step 2: Convert to fraction form
    442,874.80/664,409.40 = 143,304.40/x
  3. Step 3: Cross multiply
    442,874.80x = 664,409.40 × 143,304.40
  4. Step 4: Simplify right side
    442,874.80x = 95,212,790,421.36
  5. Step 5: Solve for x
    x = 95,212,790,421.36/442,874.80
  6. Step 6: Final answer
    x = 214,988.05

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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.