Home / 389,556.30-584,260.65-136,777.38

Finding the Fourth Proportional to 389,556.30, 584,260.65 and 136,777.38

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Solution

The fourth proportional to 389,556.30, 584,260.65 and 136,777.38 is: 205,140.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    389,556.30 : 584,260.65 = 136,777.38 : x
  2. Step 2: Convert to fraction form
    389,556.30/584,260.65 = 136,777.38/x
  3. Step 3: Cross multiply
    389,556.30x = 584,260.65 × 136,777.38
  4. Step 4: Simplify right side
    389,556.30x = 79,913,640,944.10
  5. Step 5: Solve for x
    x = 79,913,640,944.10/389,556.30
  6. Step 6: Final answer
    x = 205,140.16

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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.