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Finding the Fourth Proportional to 545,521.50, 818,311.41 and 171,573.66

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Solution

The fourth proportional to 545,521.50, 818,311.41 and 171,573.66 is: 257,369.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    545,521.50 : 818,311.41 = 171,573.66 : x
  2. Step 2: Convert to fraction form
    545,521.50/818,311.41 = 171,573.66/x
  3. Step 3: Cross multiply
    545,521.50x = 818,311.41 × 171,573.66
  4. Step 4: Simplify right side
    545,521.50x = 140,400,683,633.46
  5. Step 5: Solve for x
    x = 140,400,683,633.46/545,521.50
  6. Step 6: Final answer
    x = 257,369.66

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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.