Home / 228,786.24-315,724.80-128,184.96

Finding the Fourth Proportional to 228,786.24, 315,724.80 and 128,184.96

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Solution

The fourth proportional to 228,786.24, 315,724.80 and 128,184.96 is: 176,895.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    228,786.24 : 315,724.80 = 128,184.96 : x
  2. Step 2: Convert to fraction form
    228,786.24/315,724.80 = 128,184.96/x
  3. Step 3: Cross multiply
    228,786.24x = 315,724.80 × 128,184.96
  4. Step 4: Simplify right side
    228,786.24x = 40,471,170,859.01
  5. Step 5: Solve for x
    x = 40,471,170,859.01/228,786.24
  6. Step 6: Final answer
    x = 176,895.13

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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.