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Finding the Fourth Proportional to 407,387.33, 611,104.34 and 107,860.11

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Solution

The fourth proportional to 407,387.33, 611,104.34 and 107,860.11 is: 161,796.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    407,387.33 : 611,104.34 = 107,860.11 : x
  2. Step 2: Convert to fraction form
    407,387.33/611,104.34 = 107,860.11/x
  3. Step 3: Cross multiply
    407,387.33x = 611,104.34 × 107,860.11
  4. Step 4: Simplify right side
    407,387.33x = 65,913,781,333.88
  5. Step 5: Solve for x
    x = 65,913,781,333.88/407,387.33
  6. Step 6: Final answer
    x = 161,796.35

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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.