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Finding the Fourth Proportional to 228,703.25, 315,605.76 and 126,727.83

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Solution

The fourth proportional to 228,703.25, 315,605.76 and 126,727.83 is: 174,881.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    228,703.25 : 315,605.76 = 126,727.83 : x
  2. Step 2: Convert to fraction form
    228,703.25/315,605.76 = 126,727.83/x
  3. Step 3: Cross multiply
    228,703.25x = 315,605.76 × 126,727.83
  4. Step 4: Simplify right side
    228,703.25x = 39,996,033,100.30
  5. Step 5: Solve for x
    x = 39,996,033,100.30/228,703.25
  6. Step 6: Final answer
    x = 174,881.79

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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.