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Finding the Fourth Proportional to 388,757.57, 583,198.85 and 136,032.41

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Solution

The fourth proportional to 388,757.57, 583,198.85 and 136,032.41 is: 204,070.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    388,757.57 : 583,198.85 = 136,032.41 : x
  2. Step 2: Convert to fraction form
    388,757.57/583,198.85 = 136,032.41/x
  3. Step 3: Cross multiply
    388,757.57x = 583,198.85 × 136,032.41
  4. Step 4: Simplify right side
    388,757.57x = 79,333,946,872.81
  5. Step 5: Solve for x
    x = 79,333,946,872.81/388,757.57
  6. Step 6: Final answer
    x = 204,070.49

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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.