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Finding the Fourth Proportional to 652,079.40, 978,291.90 and 231,311.40

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Solution

The fourth proportional to 652,079.40, 978,291.90 and 231,311.40 is: 347,028.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    652,079.40 : 978,291.90 = 231,311.40 : x
  2. Step 2: Convert to fraction form
    652,079.40/978,291.90 = 231,311.40/x
  3. Step 3: Cross multiply
    652,079.40x = 978,291.90 × 231,311.40
  4. Step 4: Simplify right side
    652,079.40x = 226,290,068,997.66
  5. Step 5: Solve for x
    x = 226,290,068,997.66/652,079.40
  6. Step 6: Final answer
    x = 347,028.40

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.