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Finding the Fourth Proportional to 545,474.30, 818,340.23 and 171,497.30

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Solution

The fourth proportional to 545,474.30, 818,340.23 and 171,497.30 is: 257,286.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    545,474.30 : 818,340.23 = 171,497.30 : x
  2. Step 2: Convert to fraction form
    545,474.30/818,340.23 = 171,497.30/x
  3. Step 3: Cross multiply
    545,474.30x = 818,340.23 × 171,497.30
  4. Step 4: Simplify right side
    545,474.30x = 140,343,139,926.38
  5. Step 5: Solve for x
    x = 140,343,139,926.38/545,474.30
  6. Step 6: Final answer
    x = 257,286.44

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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.