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Finding the Fourth Proportional to 545,706.64, 753,097.85 and 303,989.15

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Solution

The fourth proportional to 545,706.64, 753,097.85 and 303,989.15 is: 419,517.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    545,706.64 : 753,097.85 = 303,989.15 : x
  2. Step 2: Convert to fraction form
    545,706.64/753,097.85 = 303,989.15/x
  3. Step 3: Cross multiply
    545,706.64x = 753,097.85 × 303,989.15
  4. Step 4: Simplify right side
    545,706.64x = 228,933,575,288.33
  5. Step 5: Solve for x
    x = 228,933,575,288.33/545,706.64
  6. Step 6: Final answer
    x = 419,517.66

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.