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Finding the Fourth Proportional to 401,317, 553,817.46 and 231,551.13

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Solution

The fourth proportional to 401,317, 553,817.46 and 231,551.13 is: 319,540.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    401,317 : 553,817.46 = 231,551.13 : x
  2. Step 2: Convert to fraction form
    401,317/553,817.46 = 231,551.13/x
  3. Step 3: Cross multiply
    401,317x = 553,817.46 × 231,551.13
  4. Step 4: Simplify right side
    401,317x = 128,237,058,676.73
  5. Step 5: Solve for x
    x = 128,237,058,676.73/401,317
  6. Step 6: Final answer
    x = 319,540.56

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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.