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Finding the Fourth Proportional to 469,778.66, 648,308.94 and 276,150.87

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Solution

The fourth proportional to 469,778.66, 648,308.94 and 276,150.87 is: 381,096.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    469,778.66 : 648,308.94 = 276,150.87 : x
  2. Step 2: Convert to fraction form
    469,778.66/648,308.94 = 276,150.87/x
  3. Step 3: Cross multiply
    469,778.66x = 648,308.94 × 276,150.87
  4. Step 4: Simplify right side
    469,778.66x = 179,031,073,187.48
  5. Step 5: Solve for x
    x = 179,031,073,187.48/469,778.66
  6. Step 6: Final answer
    x = 381,096.65

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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.