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Finding the Fourth Proportional to 228,513.08, 315,310.50 and 143,570

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Solution

The fourth proportional to 228,513.08, 315,310.50 and 143,570 is: 198,103.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    228,513.08 : 315,310.50 = 143,570 : x
  2. Step 2: Convert to fraction form
    228,513.08/315,310.50 = 143,570/x
  3. Step 3: Cross multiply
    228,513.08x = 315,310.50 × 143,570
  4. Step 4: Simplify right side
    228,513.08x = 45,269,128,485
  5. Step 5: Solve for x
    x = 45,269,128,485/228,513.08
  6. Step 6: Final answer
    x = 198,103.01

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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.