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Finding the Fourth Proportional to 442,866.33, 664,404.93 and 143,346.87

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Solution

The fourth proportional to 442,866.33, 664,404.93 and 143,346.87 is: 215,054.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    442,866.33 : 664,404.93 = 143,346.87 : x
  2. Step 2: Convert to fraction form
    442,866.33/664,404.93 = 143,346.87/x
  3. Step 3: Cross multiply
    442,866.33x = 664,404.93 × 143,346.87
  4. Step 4: Simplify right side
    442,866.33x = 95,240,367,128.07
  5. Step 5: Solve for x
    x = 95,240,367,128.07/442,866.33
  6. Step 6: Final answer
    x = 215,054.43

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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.