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Finding the Fourth Proportional to 386,109.48, 579,167.64 and 158,530.26

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Solution

The fourth proportional to 386,109.48, 579,167.64 and 158,530.26 is: 237,796.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    386,109.48 : 579,167.64 = 158,530.26 : x
  2. Step 2: Convert to fraction form
    386,109.48/579,167.64 = 158,530.26/x
  3. Step 3: Cross multiply
    386,109.48x = 579,167.64 × 158,530.26
  4. Step 4: Simplify right side
    386,109.48x = 91,815,597,638.73
  5. Step 5: Solve for x
    x = 91,815,597,638.73/386,109.48
  6. Step 6: Final answer
    x = 237,796.80

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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.