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Finding the Fourth Proportional to 347,809.32, 521,758.53 and 107,939.16

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Solution

The fourth proportional to 347,809.32, 521,758.53 and 107,939.16 is: 161,922.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    347,809.32 : 521,758.53 = 107,939.16 : x
  2. Step 2: Convert to fraction form
    347,809.32/521,758.53 = 107,939.16/x
  3. Step 3: Cross multiply
    347,809.32x = 521,758.53 × 107,939.16
  4. Step 4: Simplify right side
    347,809.32x = 56,318,177,451.03
  5. Step 5: Solve for x
    x = 56,318,177,451.03/347,809.32
  6. Step 6: Final answer
    x = 161,922.57

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.