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Finding the Fourth Proportional to 401,459.44, 553,855.96 and 231,660.76

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Solution

The fourth proportional to 401,459.44, 553,855.96 and 231,660.76 is: 319,600.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    401,459.44 : 553,855.96 = 231,660.76 : x
  2. Step 2: Convert to fraction form
    401,459.44/553,855.96 = 231,660.76/x
  3. Step 3: Cross multiply
    401,459.44x = 553,855.96 × 231,660.76
  4. Step 4: Simplify right side
    401,459.44x = 128,306,692,624.13
  5. Step 5: Solve for x
    x = 128,306,692,624.13/401,459.44
  6. Step 6: Final answer
    x = 319,600.64

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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.