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Finding the Fourth Proportional to 441,331.61, 661,162.23 and 260,876.77

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Solution

The fourth proportional to 441,331.61, 661,162.23 and 260,876.77 is: 390,821.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    441,331.61 : 661,162.23 = 260,876.77 : x
  2. Step 2: Convert to fraction form
    441,331.61/661,162.23 = 260,876.77/x
  3. Step 3: Cross multiply
    441,331.61x = 661,162.23 × 260,876.77
  4. Step 4: Simplify right side
    441,331.61x = 172,481,865,355.49
  5. Step 5: Solve for x
    x = 172,481,865,355.49/441,331.61
  6. Step 6: Final answer
    x = 390,821.47

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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.