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Finding the Fourth Proportional to 463,906.08, 640,179.52 and 272,931.76

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Solution

The fourth proportional to 463,906.08, 640,179.52 and 272,931.76 is: 376,639.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    463,906.08 : 640,179.52 = 272,931.76 : x
  2. Step 2: Convert to fraction form
    463,906.08/640,179.52 = 272,931.76/x
  3. Step 3: Cross multiply
    463,906.08x = 640,179.52 × 272,931.76
  4. Step 4: Simplify right side
    463,906.08x = 174,725,323,109.56
  5. Step 5: Solve for x
    x = 174,725,323,109.56/463,906.08
  6. Step 6: Final answer
    x = 376,639.43

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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.