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Finding the Fourth Proportional to 401,029, 553,420.14 and 239,890.84

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Solution

The fourth proportional to 401,029, 553,420.14 and 239,890.84 is: 331,049.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    401,029 : 553,420.14 = 239,890.84 : x
  2. Step 2: Convert to fraction form
    401,029/553,420.14 = 239,890.84/x
  3. Step 3: Cross multiply
    401,029x = 553,420.14 × 239,890.84
  4. Step 4: Simplify right side
    401,029x = 132,760,422,257.52
  5. Step 5: Solve for x
    x = 132,760,422,257.52/401,029
  6. Step 6: Final answer
    x = 331,049.43

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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.