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Finding the Fourth Proportional to 386,524.86, 579,549.15 and 133,746.54

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Solution

The fourth proportional to 386,524.86, 579,549.15 and 133,746.54 is: 200,537.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    386,524.86 : 579,549.15 = 133,746.54 : x
  2. Step 2: Convert to fraction form
    386,524.86/579,549.15 = 133,746.54/x
  3. Step 3: Cross multiply
    386,524.86x = 579,549.15 × 133,746.54
  4. Step 4: Simplify right side
    386,524.86x = 77,512,693,572.44
  5. Step 5: Solve for x
    x = 77,512,693,572.44/386,524.86
  6. Step 6: Final answer
    x = 200,537.41

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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.