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Finding the Fourth Proportional to 442,858.88, 664,393.78 and 143,339.51

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Solution

The fourth proportional to 442,858.88, 664,393.78 and 143,339.51 is: 215,043.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    442,858.88 : 664,393.78 = 143,339.51 : x
  2. Step 2: Convert to fraction form
    442,858.88/664,393.78 = 143,339.51/x
  3. Step 3: Cross multiply
    442,858.88x = 664,393.78 × 143,339.51
  4. Step 4: Simplify right side
    442,858.88x = 95,233,878,155.55
  5. Step 5: Solve for x
    x = 95,233,878,155.55/442,858.88
  6. Step 6: Final answer
    x = 215,043.40

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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.