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Finding the Fourth Proportional to 228,801.36, 315,639.06 and 143,965.20

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Solution

The fourth proportional to 228,801.36, 315,639.06 and 143,965.20 is: 198,604.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    228,801.36 : 315,639.06 = 143,965.20 : x
  2. Step 2: Convert to fraction form
    228,801.36/315,639.06 = 143,965.20/x
  3. Step 3: Cross multiply
    228,801.36x = 315,639.06 × 143,965.20
  4. Step 4: Simplify right side
    228,801.36x = 45,441,040,400.71
  5. Step 5: Solve for x
    x = 45,441,040,400.71/228,801.36
  6. Step 6: Final answer
    x = 198,604.77

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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.