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Finding the Fourth Proportional to 228,910.69, 315,881.34 and 126,932.40

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Solution

The fourth proportional to 228,910.69, 315,881.34 and 126,932.40 is: 175,158.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    228,910.69 : 315,881.34 = 126,932.40 : x
  2. Step 2: Convert to fraction form
    228,910.69/315,881.34 = 126,932.40/x
  3. Step 3: Cross multiply
    228,910.69x = 315,881.34 × 126,932.40
  4. Step 4: Simplify right side
    228,910.69x = 40,095,576,601.42
  5. Step 5: Solve for x
    x = 40,095,576,601.42/228,910.69
  6. Step 6: Final answer
    x = 175,158.17

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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.