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Finding the Fourth Proportional to 389,351.09, 584,090.88 and 119,472.56

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Solution

The fourth proportional to 389,351.09, 584,090.88 and 119,472.56 is: 179,228.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    389,351.09 : 584,090.88 = 119,472.56 : x
  2. Step 2: Convert to fraction form
    389,351.09/584,090.88 = 119,472.56/x
  3. Step 3: Cross multiply
    389,351.09x = 584,090.88 × 119,472.56
  4. Step 4: Simplify right side
    389,351.09x = 69,782,832,706.25
  5. Step 5: Solve for x
    x = 69,782,832,706.25/389,351.09
  6. Step 6: Final answer
    x = 179,228.55

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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.