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Finding the Fourth Proportional to 389,339.58, 584,005.68 and 123,100.14

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Solution

The fourth proportional to 389,339.58, 584,005.68 and 123,100.14 is: 184,649.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    389,339.58 : 584,005.68 = 123,100.14 : x
  2. Step 2: Convert to fraction form
    389,339.58/584,005.68 = 123,100.14/x
  3. Step 3: Cross multiply
    389,339.58x = 584,005.68 × 123,100.14
  4. Step 4: Simplify right side
    389,339.58x = 71,891,180,968.80
  5. Step 5: Solve for x
    x = 71,891,180,968.80/389,339.58
  6. Step 6: Final answer
    x = 184,649.04

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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.