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Finding the Fourth Proportional to 401,491.44, 553,899.96 and 231,692.76

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Solution

The fourth proportional to 401,491.44, 553,899.96 and 231,692.76 is: 319,644.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    401,491.44 : 553,899.96 = 231,692.76 : x
  2. Step 2: Convert to fraction form
    401,491.44/553,899.96 = 231,692.76/x
  3. Step 3: Cross multiply
    401,491.44x = 553,899.96 × 231,692.76
  4. Step 4: Simplify right side
    401,491.44x = 128,334,610,496.29
  5. Step 5: Solve for x
    x = 128,334,610,496.29/401,491.44
  6. Step 6: Final answer
    x = 319,644.70

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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.