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Finding the Fourth Proportional to 665,316.34, 998,057.49 and 260,456.22

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Solution

The fourth proportional to 665,316.34, 998,057.49 and 260,456.22 is: 390,716.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    665,316.34 : 998,057.49 = 260,456.22 : x
  2. Step 2: Convert to fraction form
    665,316.34/998,057.49 = 260,456.22/x
  3. Step 3: Cross multiply
    665,316.34x = 998,057.49 × 260,456.22
  4. Step 4: Simplify right side
    665,316.34x = 259,950,280,211.38
  5. Step 5: Solve for x
    x = 259,950,280,211.38/665,316.34
  6. Step 6: Final answer
    x = 390,716.81

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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.