Home / 401,139.75-553,577.19-219,847.78

Finding the Fourth Proportional to 401,139.75, 553,577.19 and 219,847.78

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Solution

The fourth proportional to 401,139.75, 553,577.19 and 219,847.78 is: 303,392.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    401,139.75 : 553,577.19 = 219,847.78 : x
  2. Step 2: Convert to fraction form
    401,139.75/553,577.19 = 219,847.78/x
  3. Step 3: Cross multiply
    401,139.75x = 553,577.19 × 219,847.78
  4. Step 4: Simplify right side
    401,139.75x = 121,702,715,934.15
  5. Step 5: Solve for x
    x = 121,702,715,934.15/401,139.75
  6. Step 6: Final answer
    x = 303,392.31

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.