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Finding the Fourth Proportional to 347,911.30, 521,805.29 and 158,327.56

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Solution

The fourth proportional to 347,911.30, 521,805.29 and 158,327.56 is: 237,463.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    347,911.30 : 521,805.29 = 158,327.56 : x
  2. Step 2: Convert to fraction form
    347,911.30/521,805.29 = 158,327.56/x
  3. Step 3: Cross multiply
    347,911.30x = 521,805.29 × 158,327.56
  4. Step 4: Simplify right side
    347,911.30x = 82,616,159,112.00
  5. Step 5: Solve for x
    x = 82,616,159,112.00/347,911.30
  6. Step 6: Final answer
    x = 237,463.28

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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.