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Finding the Fourth Proportional to 401,771.92, 554,437.50 and 220,483.12

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Solution

The fourth proportional to 401,771.92, 554,437.50 and 220,483.12 is: 304,262.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    401,771.92 : 554,437.50 = 220,483.12 : x
  2. Step 2: Convert to fraction form
    401,771.92/554,437.50 = 220,483.12/x
  3. Step 3: Cross multiply
    401,771.92x = 554,437.50 × 220,483.12
  4. Step 4: Simplify right side
    401,771.92x = 122,244,109,845
  5. Step 5: Solve for x
    x = 122,244,109,845/401,771.92
  6. Step 6: Final answer
    x = 304,262.45

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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.