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Finding the Fourth Proportional to 252,632.72, 378,619.99 and 102,697.87

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Solution

The fourth proportional to 252,632.72, 378,619.99 and 102,697.87 is: 153,913.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    252,632.72 : 378,619.99 = 102,697.87 : x
  2. Step 2: Convert to fraction form
    252,632.72/378,619.99 = 102,697.87/x
  3. Step 3: Cross multiply
    252,632.72x = 378,619.99 × 102,697.87
  4. Step 4: Simplify right side
    252,632.72x = 38,883,465,998.93
  5. Step 5: Solve for x
    x = 38,883,465,998.93/252,632.72
  6. Step 6: Final answer
    x = 153,913.03

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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.