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Finding the Fourth Proportional to 401,040.56, 553,412.12 and 219,716.40

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Solution

The fourth proportional to 401,040.56, 553,412.12 and 219,716.40 is: 303,195.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    401,040.56 : 553,412.12 = 219,716.40 : x
  2. Step 2: Convert to fraction form
    401,040.56/553,412.12 = 219,716.40/x
  3. Step 3: Cross multiply
    401,040.56x = 553,412.12 × 219,716.40
  4. Step 4: Simplify right side
    401,040.56x = 121,593,718,722.77
  5. Step 5: Solve for x
    x = 121,593,718,722.77/401,040.56
  6. Step 6: Final answer
    x = 303,195.56

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1.5x scale

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.