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Finding the Fourth Proportional to 228,798.36, 315,634.92 and 143,962.20

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Solution

The fourth proportional to 228,798.36, 315,634.92 and 143,962.20 is: 198,600.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    228,798.36 : 315,634.92 = 143,962.20 : x
  2. Step 2: Convert to fraction form
    228,798.36/315,634.92 = 143,962.20/x
  3. Step 3: Cross multiply
    228,798.36x = 315,634.92 × 143,962.20
  4. Step 4: Simplify right side
    228,798.36x = 45,439,497,480.02
  5. Step 5: Solve for x
    x = 45,439,497,480.02/228,798.36
  6. Step 6: Final answer
    x = 198,600.63

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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.