Home / 389,905.20-584,404.20-179,564.40

Finding the Fourth Proportional to 389,905.20, 584,404.20 and 179,564.40

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Solution

The fourth proportional to 389,905.20, 584,404.20 and 179,564.40 is: 269,137.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    389,905.20 : 584,404.20 = 179,564.40 : x
  2. Step 2: Convert to fraction form
    389,905.20/584,404.20 = 179,564.40/x
  3. Step 3: Cross multiply
    389,905.20x = 584,404.20 × 179,564.40
  4. Step 4: Simplify right side
    389,905.20x = 104,938,189,530.48
  5. Step 5: Solve for x
    x = 104,938,189,530.48/389,905.20
  6. Step 6: Final answer
    x = 269,137.70

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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.