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Finding the Fourth Proportional to 485,231.34, 727,978.03 and 148,262.75

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Solution

The fourth proportional to 485,231.34, 727,978.03 and 148,262.75 is: 222,434.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    485,231.34 : 727,978.03 = 148,262.75 : x
  2. Step 2: Convert to fraction form
    485,231.34/727,978.03 = 148,262.75/x
  3. Step 3: Cross multiply
    485,231.34x = 727,978.03 × 148,262.75
  4. Step 4: Simplify right side
    485,231.34x = 107,932,024,667.38
  5. Step 5: Solve for x
    x = 107,932,024,667.38/485,231.34
  6. Step 6: Final answer
    x = 222,434.16

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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.