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Finding the Fourth Proportional to 545,005.67, 817,631.52 and 165,960.30

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Solution

The fourth proportional to 545,005.67, 817,631.52 and 165,960.30 is: 248,977.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    545,005.67 : 817,631.52 = 165,960.30 : x
  2. Step 2: Convert to fraction form
    545,005.67/817,631.52 = 165,960.30/x
  3. Step 3: Cross multiply
    545,005.67x = 817,631.52 × 165,960.30
  4. Step 4: Simplify right side
    545,005.67x = 135,694,372,348.66
  5. Step 5: Solve for x
    x = 135,694,372,348.66/545,005.67
  6. Step 6: Final answer
    x = 248,977.91

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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.