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Finding the Fourth Proportional to 545,222.21, 818,000.06 and 279,170.91

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Solution

The fourth proportional to 545,222.21, 818,000.06 and 279,170.91 is: 418,841.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    545,222.21 : 818,000.06 = 279,170.91 : x
  2. Step 2: Convert to fraction form
    545,222.21/818,000.06 = 279,170.91/x
  3. Step 3: Cross multiply
    545,222.21x = 818,000.06 × 279,170.91
  4. Step 4: Simplify right side
    545,222.21x = 228,361,819,734.40
  5. Step 5: Solve for x
    x = 228,361,819,734.40/545,222.21
  6. Step 6: Final answer
    x = 418,841.74

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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.