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Finding the Fourth Proportional to 386,597.93, 579,757.82 and 133,809.75

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Solution

The fourth proportional to 386,597.93, 579,757.82 and 133,809.75 is: 200,666.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    386,597.93 : 579,757.82 = 133,809.75 : x
  2. Step 2: Convert to fraction form
    386,597.93/579,757.82 = 133,809.75/x
  3. Step 3: Cross multiply
    386,597.93x = 579,757.82 × 133,809.75
  4. Step 4: Simplify right side
    386,597.93x = 77,577,248,285.70
  5. Step 5: Solve for x
    x = 77,577,248,285.70/386,597.93
  6. Step 6: Final answer
    x = 200,666.49

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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.