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Finding the Fourth Proportional to 442,988.73, 664,548.30 and 143,369.73

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Solution

The fourth proportional to 442,988.73, 664,548.30 and 143,369.73 is: 215,075.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    442,988.73 : 664,548.30 = 143,369.73 : x
  2. Step 2: Convert to fraction form
    442,988.73/664,548.30 = 143,369.73/x
  3. Step 3: Cross multiply
    442,988.73x = 664,548.30 × 143,369.73
  4. Step 4: Simplify right side
    442,988.73x = 95,276,110,342.96
  5. Step 5: Solve for x
    x = 95,276,110,342.96/442,988.73
  6. Step 6: Final answer
    x = 215,075.70

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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.