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Finding the Fourth Proportional to 545,963.56, 818,749.50 and 209,098.92

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Solution

The fourth proportional to 545,963.56, 818,749.50 and 209,098.92 is: 313,573.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    545,963.56 : 818,749.50 = 209,098.92 : x
  2. Step 2: Convert to fraction form
    545,963.56/818,749.50 = 209,098.92/x
  3. Step 3: Cross multiply
    545,963.56x = 818,749.50 × 209,098.92
  4. Step 4: Simplify right side
    545,963.56x = 171,199,636,200.54
  5. Step 5: Solve for x
    x = 171,199,636,200.54/545,963.56
  6. Step 6: Final answer
    x = 313,573.38

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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.