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Finding the Fourth Proportional to 308,409.72, 425,722.86 and 201,005.88

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Solution

The fourth proportional to 308,409.72, 425,722.86 and 201,005.88 is: 277,464.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    308,409.72 : 425,722.86 = 201,005.88 : x
  2. Step 2: Convert to fraction form
    308,409.72/425,722.86 = 201,005.88/x
  3. Step 3: Cross multiply
    308,409.72x = 425,722.86 × 201,005.88
  4. Step 4: Simplify right side
    308,409.72x = 85,572,798,110.42
  5. Step 5: Solve for x
    x = 85,572,798,110.42/308,409.72
  6. Step 6: Final answer
    x = 277,464.66

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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.