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Finding the Fourth Proportional to 463,940.42, 640,207.46 and 272,916.90

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Solution

The fourth proportional to 463,940.42, 640,207.46 and 272,916.90 is: 376,607.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    463,940.42 : 640,207.46 = 272,916.90 : x
  2. Step 2: Convert to fraction form
    463,940.42/640,207.46 = 272,916.90/x
  3. Step 3: Cross multiply
    463,940.42x = 640,207.46 × 272,916.90
  4. Step 4: Simplify right side
    463,940.42x = 174,723,433,975.49
  5. Step 5: Solve for x
    x = 174,723,433,975.49/463,940.42
  6. Step 6: Final answer
    x = 376,607.49

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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.