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Finding the Fourth Proportional to 401,508.78, 554,082.92 and 220,222.20

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Solution

The fourth proportional to 401,508.78, 554,082.92 and 220,222.20 is: 303,907.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    401,508.78 : 554,082.92 = 220,222.20 : x
  2. Step 2: Convert to fraction form
    401,508.78/554,082.92 = 220,222.20/x
  3. Step 3: Cross multiply
    401,508.78x = 554,082.92 × 220,222.20
  4. Step 4: Simplify right side
    401,508.78x = 122,021,358,523.71
  5. Step 5: Solve for x
    x = 122,021,358,523.71/401,508.78
  6. Step 6: Final answer
    x = 303,907.07

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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.