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Finding the Fourth Proportional to 545,417.43, 752,688.20 and 303,722.49

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Solution

The fourth proportional to 545,417.43, 752,688.20 and 303,722.49 is: 419,143.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    545,417.43 : 752,688.20 = 303,722.49 : x
  2. Step 2: Convert to fraction form
    545,417.43/752,688.20 = 303,722.49/x
  3. Step 3: Cross multiply
    545,417.43x = 752,688.20 × 303,722.49
  4. Step 4: Simplify right side
    545,417.43x = 228,608,332,779.01
  5. Step 5: Solve for x
    x = 228,608,332,779.01/545,417.43
  6. Step 6: Final answer
    x = 419,143.80

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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.