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Finding the Fourth Proportional to 353,978.21, 530,972.79 and 101,253.96

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Solution

The fourth proportional to 353,978.21, 530,972.79 and 101,253.96 is: 151,882.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    353,978.21 : 530,972.79 = 101,253.96 : x
  2. Step 2: Convert to fraction form
    353,978.21/530,972.79 = 101,253.96/x
  3. Step 3: Cross multiply
    353,978.21x = 530,972.79 × 101,253.96
  4. Step 4: Simplify right side
    353,978.21x = 53,763,097,260.05
  5. Step 5: Solve for x
    x = 53,763,097,260.05/353,978.21
  6. Step 6: Final answer
    x = 151,882.50

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Why These Related Problems?

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