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Finding the Fourth Proportional to 228,112.80, 342,169.20 and 134,800.80

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Solution

The fourth proportional to 228,112.80, 342,169.20 and 134,800.80 is: 202,201.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    228,112.80 : 342,169.20 = 134,800.80 : x
  2. Step 2: Convert to fraction form
    228,112.80/342,169.20 = 134,800.80/x
  3. Step 3: Cross multiply
    228,112.80x = 342,169.20 × 134,800.80
  4. Step 4: Simplify right side
    228,112.80x = 46,124,681,895.36
  5. Step 5: Solve for x
    x = 46,124,681,895.36/228,112.80
  6. Step 6: Final answer
    x = 202,201.20

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.