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Finding the Fourth Proportional to 545,295.75, 818,108.87 and 279,244.77

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Solution

The fourth proportional to 545,295.75, 818,108.87 and 279,244.77 is: 418,951.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    545,295.75 : 818,108.87 = 279,244.77 : x
  2. Step 2: Convert to fraction form
    545,295.75/818,108.87 = 279,244.77/x
  3. Step 3: Cross multiply
    545,295.75x = 818,108.87 × 279,244.77
  4. Step 4: Simplify right side
    545,295.75x = 228,452,621,841.89
  5. Step 5: Solve for x
    x = 228,452,621,841.89/545,295.75
  6. Step 6: Final answer
    x = 418,951.77

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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.