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Finding the Fourth Proportional to 388,963.75, 583,544.09 and 108,481

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Solution

The fourth proportional to 388,963.75, 583,544.09 and 108,481 is: 162,748.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    388,963.75 : 583,544.09 = 108,481 : x
  2. Step 2: Convert to fraction form
    388,963.75/583,544.09 = 108,481/x
  3. Step 3: Cross multiply
    388,963.75x = 583,544.09 × 108,481
  4. Step 4: Simplify right side
    388,963.75x = 63,303,446,427.29
  5. Step 5: Solve for x
    x = 63,303,446,427.29/388,963.75
  6. Step 6: Final answer
    x = 162,748.96

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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.