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Finding the Fourth Proportional to 228,717.72, 315,632.32 and 126,744.90

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Solution

The fourth proportional to 228,717.72, 315,632.32 and 126,744.90 is: 174,909.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    228,717.72 : 315,632.32 = 126,744.90 : x
  2. Step 2: Convert to fraction form
    228,717.72/315,632.32 = 126,744.90/x
  3. Step 3: Cross multiply
    228,717.72x = 315,632.32 × 126,744.90
  4. Step 4: Simplify right side
    228,717.72x = 40,004,786,835.17
  5. Step 5: Solve for x
    x = 40,004,786,835.17/228,717.72
  6. Step 6: Final answer
    x = 174,909.00

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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.