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Finding the Fourth Proportional to 545,121.30, 817,718.40 and 185,286.90

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Solution

The fourth proportional to 545,121.30, 817,718.40 and 185,286.90 is: 277,942.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    545,121.30 : 817,718.40 = 185,286.90 : x
  2. Step 2: Convert to fraction form
    545,121.30/817,718.40 = 185,286.90/x
  3. Step 3: Cross multiply
    545,121.30x = 817,718.40 × 185,286.90
  4. Step 4: Simplify right side
    545,121.30x = 151,512,507,408.96
  5. Step 5: Solve for x
    x = 151,512,507,408.96/545,121.30
  6. Step 6: Final answer
    x = 277,942.74

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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.