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Finding the Fourth Proportional to 400,989.95, 553,349.23 and 239,749.73

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Solution

The fourth proportional to 400,989.95, 553,349.23 and 239,749.73 is: 330,844.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    400,989.95 : 553,349.23 = 239,749.73 : x
  2. Step 2: Convert to fraction form
    400,989.95/553,349.23 = 239,749.73/x
  3. Step 3: Cross multiply
    400,989.95x = 553,349.23 × 239,749.73
  4. Step 4: Simplify right side
    400,989.95x = 132,665,325,122.09
  5. Step 5: Solve for x
    x = 132,665,325,122.09/400,989.95
  6. Step 6: Final answer
    x = 330,844.52

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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.