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Finding the Fourth Proportional to 545,209.28, 752,380.74 and 303,491.50

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Solution

The fourth proportional to 545,209.28, 752,380.74 and 303,491.50 is: 418,813.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    545,209.28 : 752,380.74 = 303,491.50 : x
  2. Step 2: Convert to fraction form
    545,209.28/752,380.74 = 303,491.50/x
  3. Step 3: Cross multiply
    545,209.28x = 752,380.74 × 303,491.50
  4. Step 4: Simplify right side
    545,209.28x = 228,341,159,353.71
  5. Step 5: Solve for x
    x = 228,341,159,353.71/545,209.28
  6. Step 6: Final answer
    x = 418,813.78

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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.