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Finding the Fourth Proportional to 228,807.72, 315,567.45 and 161,049

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Solution

The fourth proportional to 228,807.72, 315,567.45 and 161,049 is: 222,115.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    228,807.72 : 315,567.45 = 161,049 : x
  2. Step 2: Convert to fraction form
    228,807.72/315,567.45 = 161,049/x
  3. Step 3: Cross multiply
    228,807.72x = 315,567.45 × 161,049
  4. Step 4: Simplify right side
    228,807.72x = 50,821,822,255.05
  5. Step 5: Solve for x
    x = 50,821,822,255.05/228,807.72
  6. Step 6: Final answer
    x = 222,115.85

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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.