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Finding the Fourth Proportional to 545,021.92, 817,435.50 and 165,850.66

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Solution

The fourth proportional to 545,021.92, 817,435.50 and 165,850.66 is: 248,746.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    545,021.92 : 817,435.50 = 165,850.66 : x
  2. Step 2: Convert to fraction form
    545,021.92/817,435.50 = 165,850.66/x
  3. Step 3: Cross multiply
    545,021.92x = 817,435.50 × 165,850.66
  4. Step 4: Simplify right side
    545,021.92x = 135,572,217,182.43
  5. Step 5: Solve for x
    x = 135,572,217,182.43/545,021.92
  6. Step 6: Final answer
    x = 248,746.36

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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.