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Finding the Fourth Proportional to 545,005.13, 817,674.14 and 278,954.15

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Solution

The fourth proportional to 545,005.13, 817,674.14 and 278,954.15 is: 418,516.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    545,005.13 : 817,674.14 = 278,954.15 : x
  2. Step 2: Convert to fraction form
    545,005.13/817,674.14 = 278,954.15/x
  3. Step 3: Cross multiply
    545,005.13x = 817,674.14 × 278,954.15
  4. Step 4: Simplify right side
    545,005.13x = 228,093,591,309.70
  5. Step 5: Solve for x
    x = 228,093,591,309.70/545,005.13
  6. Step 6: Final answer
    x = 418,516.42

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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.