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Finding the Fourth Proportional to 401,508.60, 554,082.65 and 220,222.02

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Solution

The fourth proportional to 401,508.60, 554,082.65 and 220,222.02 is: 303,906.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    401,508.60 : 554,082.65 = 220,222.02 : x
  2. Step 2: Convert to fraction form
    401,508.60/554,082.65 = 220,222.02/x
  3. Step 3: Cross multiply
    401,508.60x = 554,082.65 × 220,222.02
  4. Step 4: Simplify right side
    401,508.60x = 122,021,199,328.84
  5. Step 5: Solve for x
    x = 122,021,199,328.84/401,508.60
  6. Step 6: Final answer
    x = 303,906.81

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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.