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Finding the Fourth Proportional to 457,502.78, 631,369.89 and 276,179.22

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Solution

The fourth proportional to 457,502.78, 631,369.89 and 276,179.22 is: 381,137.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    457,502.78 : 631,369.89 = 276,179.22 : x
  2. Step 2: Convert to fraction form
    457,502.78/631,369.89 = 276,179.22/x
  3. Step 3: Cross multiply
    457,502.78x = 631,369.89 × 276,179.22
  4. Step 4: Simplify right side
    457,502.78x = 174,371,243,751.69
  5. Step 5: Solve for x
    x = 174,371,243,751.69/457,502.78
  6. Step 6: Final answer
    x = 381,137.01

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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.