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Finding the Fourth Proportional to 228,970.65, 315,998.91 and 127,028.97

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Solution

The fourth proportional to 228,970.65, 315,998.91 and 127,028.97 is: 175,310.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    228,970.65 : 315,998.91 = 127,028.97 : x
  2. Step 2: Convert to fraction form
    228,970.65/315,998.91 = 127,028.97/x
  3. Step 3: Cross multiply
    228,970.65x = 315,998.91 × 127,028.97
  4. Step 4: Simplify right side
    228,970.65x = 40,141,016,058.42
  5. Step 5: Solve for x
    x = 40,141,016,058.42/228,970.65
  6. Step 6: Final answer
    x = 175,310.75

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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.