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Finding the Fourth Proportional to 440,800.70, 661,148.48 and 260,993.66

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Solution

The fourth proportional to 440,800.70, 661,148.48 and 260,993.66 is: 391,459.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    440,800.70 : 661,148.48 = 260,993.66 : x
  2. Step 2: Convert to fraction form
    440,800.70/661,148.48 = 260,993.66/x
  3. Step 3: Cross multiply
    440,800.70x = 661,148.48 × 260,993.66
  4. Step 4: Simplify right side
    440,800.70x = 172,555,558,945.38
  5. Step 5: Solve for x
    x = 172,555,558,945.38/440,800.70
  6. Step 6: Final answer
    x = 391,459.36

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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.