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Finding the Fourth Proportional to 418,339.92, 577,313.54 and 227,353.30

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Solution

The fourth proportional to 418,339.92, 577,313.54 and 227,353.30 is: 313,749.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    418,339.92 : 577,313.54 = 227,353.30 : x
  2. Step 2: Convert to fraction form
    418,339.92/577,313.54 = 227,353.30/x
  3. Step 3: Cross multiply
    418,339.92x = 577,313.54 × 227,353.30
  4. Step 4: Simplify right side
    418,339.92x = 131,254,138,453.68
  5. Step 5: Solve for x
    x = 131,254,138,453.68/418,339.92
  6. Step 6: Final answer
    x = 313,749.97

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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.