Home / 401,433.97-553,979.65-220,147.18

Finding the Fourth Proportional to 401,433.97, 553,979.65 and 220,147.18

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Solution

The fourth proportional to 401,433.97, 553,979.65 and 220,147.18 is: 303,803.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    401,433.97 : 553,979.65 = 220,147.18 : x
  2. Step 2: Convert to fraction form
    401,433.97/553,979.65 = 220,147.18/x
  3. Step 3: Cross multiply
    401,433.97x = 553,979.65 × 220,147.18
  4. Step 4: Simplify right side
    401,433.97x = 121,957,057,724.89
  5. Step 5: Solve for x
    x = 121,957,057,724.89/401,433.97
  6. Step 6: Final answer
    x = 303,803.53

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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.