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Finding the Fourth Proportional to 442,988.86, 664,548.50 and 143,369.86

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Solution

The fourth proportional to 442,988.86, 664,548.50 and 143,369.86 is: 215,075.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    442,988.86 : 664,548.50 = 143,369.86 : x
  2. Step 2: Convert to fraction form
    442,988.86/664,548.50 = 143,369.86/x
  3. Step 3: Cross multiply
    442,988.86x = 664,548.50 × 143,369.86
  4. Step 4: Simplify right side
    442,988.86x = 95,276,225,408.21
  5. Step 5: Solve for x
    x = 95,276,225,408.21/442,988.86
  6. Step 6: Final answer
    x = 215,075.89

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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.