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Finding the Fourth Proportional to 291,665.76, 437,542.38 and 104,721

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Solution

The fourth proportional to 291,665.76, 437,542.38 and 104,721 is: 157,097.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    291,665.76 : 437,542.38 = 104,721 : x
  2. Step 2: Convert to fraction form
    291,665.76/437,542.38 = 104,721/x
  3. Step 3: Cross multiply
    291,665.76x = 437,542.38 × 104,721
  4. Step 4: Simplify right side
    291,665.76x = 45,819,875,575.98
  5. Step 5: Solve for x
    x = 45,819,875,575.98/291,665.76
  6. Step 6: Final answer
    x = 157,097.20

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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.