Home / 401,433.46-553,985.79-220,134.60

Finding the Fourth Proportional to 401,433.46, 553,985.79 and 220,134.60

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Solution

The fourth proportional to 401,433.46, 553,985.79 and 220,134.60 is: 303,789.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    401,433.46 : 553,985.79 = 220,134.60 : x
  2. Step 2: Convert to fraction form
    401,433.46/553,985.79 = 220,134.60/x
  3. Step 3: Cross multiply
    401,433.46x = 553,985.79 × 220,134.60
  4. Step 4: Simplify right side
    401,433.46x = 121,951,440,287.33
  5. Step 5: Solve for x
    x = 121,951,440,287.33/401,433.46
  6. Step 6: Final answer
    x = 303,789.92

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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.