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Finding the Fourth Proportional to 228,628.99, 315,504.69 and 126,654.28

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Solution

The fourth proportional to 228,628.99, 315,504.69 and 126,654.28 is: 174,781.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    228,628.99 : 315,504.69 = 126,654.28 : x
  2. Step 2: Convert to fraction form
    228,628.99/315,504.69 = 126,654.28/x
  3. Step 3: Cross multiply
    228,628.99x = 315,504.69 × 126,654.28
  4. Step 4: Simplify right side
    228,628.99x = 39,960,018,084.86
  5. Step 5: Solve for x
    x = 39,960,018,084.86/228,628.99
  6. Step 6: Final answer
    x = 174,781.06

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1.5x scale

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.