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Finding the Fourth Proportional to 545,337.09, 818,172.36 and 279,285.84

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Solution

The fourth proportional to 545,337.09, 818,172.36 and 279,285.84 is: 419,014.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    545,337.09 : 818,172.36 = 279,285.84 : x
  2. Step 2: Convert to fraction form
    545,337.09/818,172.36 = 279,285.84/x
  3. Step 3: Cross multiply
    545,337.09x = 818,172.36 × 279,285.84
  4. Step 4: Simplify right side
    545,337.09x = 228,503,954,827.38
  5. Step 5: Solve for x
    x = 228,503,954,827.38/545,337.09
  6. Step 6: Final answer
    x = 419,014.15

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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.