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Finding the Fourth Proportional to 389,627.20, 584,499.20 and 164,987.20

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Solution

The fourth proportional to 389,627.20, 584,499.20 and 164,987.20 is: 247,505.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    389,627.20 : 584,499.20 = 164,987.20 : x
  2. Step 2: Convert to fraction form
    389,627.20/584,499.20 = 164,987.20/x
  3. Step 3: Cross multiply
    389,627.20x = 584,499.20 × 164,987.20
  4. Step 4: Simplify right side
    389,627.20x = 96,434,886,410.24
  5. Step 5: Solve for x
    x = 96,434,886,410.24/389,627.20
  6. Step 6: Final answer
    x = 247,505.53

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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.