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Finding the Fourth Proportional to 465,015.54, 641,677.17 and 261,019.71

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Solution

The fourth proportional to 465,015.54, 641,677.17 and 261,019.71 is: 360,182.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    465,015.54 : 641,677.17 = 261,019.71 : x
  2. Step 2: Convert to fraction form
    465,015.54/641,677.17 = 261,019.71/x
  3. Step 3: Cross multiply
    465,015.54x = 641,677.17 × 261,019.71
  4. Step 4: Simplify right side
    465,015.54x = 167,490,388,827.02
  5. Step 5: Solve for x
    x = 167,490,388,827.02/465,015.54
  6. Step 6: Final answer
    x = 360,182.35

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.