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Finding the Fourth Proportional to 561,769.92, 775,242.35 and 307,121.11

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Solution

The fourth proportional to 561,769.92, 775,242.35 and 307,121.11 is: 423,827.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    561,769.92 : 775,242.35 = 307,121.11 : x
  2. Step 2: Convert to fraction form
    561,769.92/775,242.35 = 307,121.11/x
  3. Step 3: Cross multiply
    561,769.92x = 775,242.35 × 307,121.11
  4. Step 4: Simplify right side
    561,769.92x = 238,093,291,051.01
  5. Step 5: Solve for x
    x = 238,093,291,051.01/561,769.92
  6. Step 6: Final answer
    x = 423,827.06

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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.