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Finding the Fourth Proportional to 387,109.84, 534,270.28 and 236,294.48

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Solution

The fourth proportional to 387,109.84, 534,270.28 and 236,294.48 is: 326,122.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    387,109.84 : 534,270.28 = 236,294.48 : x
  2. Step 2: Convert to fraction form
    387,109.84/534,270.28 = 236,294.48/x
  3. Step 3: Cross multiply
    387,109.84x = 534,270.28 × 236,294.48
  4. Step 4: Simplify right side
    387,109.84x = 126,245,117,992.05
  5. Step 5: Solve for x
    x = 126,245,117,992.05/387,109.84
  6. Step 6: Final answer
    x = 326,122.21

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.