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Finding the Fourth Proportional to 545,838.40, 818,611.80 and 166,758.40

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Solution

The fourth proportional to 545,838.40, 818,611.80 and 166,758.40 is: 250,093.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    545,838.40 : 818,611.80 = 166,758.40 : x
  2. Step 2: Convert to fraction form
    545,838.40/818,611.80 = 166,758.40/x
  3. Step 3: Cross multiply
    545,838.40x = 818,611.80 × 166,758.40
  4. Step 4: Simplify right side
    545,838.40x = 136,510,393,989.12
  5. Step 5: Solve for x
    x = 136,510,393,989.12/545,838.40
  6. Step 6: Final answer
    x = 250,093.06

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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.