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Finding the Fourth Proportional to 401,056, 553,457.34 and 239,917.84

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Solution

The fourth proportional to 401,056, 553,457.34 and 239,917.84 is: 331,086.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    401,056 : 553,457.34 = 239,917.84 : x
  2. Step 2: Convert to fraction form
    401,056/553,457.34 = 239,917.84/x
  3. Step 3: Cross multiply
    401,056x = 553,457.34 × 239,917.84
  4. Step 4: Simplify right side
    401,056x = 132,784,289,544.95
  5. Step 5: Solve for x
    x = 132,784,289,544.95/401,056
  6. Step 6: Final answer
    x = 331,086.66

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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.