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Finding the Fourth Proportional to 545,080.62, 817,655.49 and 171,118.38

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Solution

The fourth proportional to 545,080.62, 817,655.49 and 171,118.38 is: 256,688.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    545,080.62 : 817,655.49 = 171,118.38 : x
  2. Step 2: Convert to fraction form
    545,080.62/817,655.49 = 171,118.38/x
  3. Step 3: Cross multiply
    545,080.62x = 817,655.49 × 171,118.38
  4. Step 4: Simplify right side
    545,080.62x = 139,915,882,846.91
  5. Step 5: Solve for x
    x = 139,915,882,846.91/545,080.62
  6. Step 6: Final answer
    x = 256,688.42

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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.