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Finding the Fourth Proportional to 228,703.50, 315,606.11 and 126,728.08

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Solution

The fourth proportional to 228,703.50, 315,606.11 and 126,728.08 is: 174,882.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    228,703.50 : 315,606.11 = 126,728.08 : x
  2. Step 2: Convert to fraction form
    228,703.50/315,606.11 = 126,728.08/x
  3. Step 3: Cross multiply
    228,703.50x = 315,606.11 × 126,728.08
  4. Step 4: Simplify right side
    228,703.50x = 39,996,155,722.93
  5. Step 5: Solve for x
    x = 39,996,155,722.93/228,703.50
  6. Step 6: Final answer
    x = 174,882.14

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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.