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Finding the Fourth Proportional to 389,553.30, 584,256.14 and 136,774.37

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Solution

The fourth proportional to 389,553.30, 584,256.14 and 136,774.37 is: 205,135.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    389,553.30 : 584,256.14 = 136,774.37 : x
  2. Step 2: Convert to fraction form
    389,553.30/584,256.14 = 136,774.37/x
  3. Step 3: Cross multiply
    389,553.30x = 584,256.14 × 136,774.37
  4. Step 4: Simplify right side
    389,553.30x = 79,911,266,756.80
  5. Step 5: Solve for x
    x = 79,911,266,756.80/389,553.30
  6. Step 6: Final answer
    x = 205,135.64

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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.