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Finding the Fourth Proportional to 463,877.72, 640,140.39 and 272,903.39

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Solution

The fourth proportional to 463,877.72, 640,140.39 and 272,903.39 is: 376,600.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    463,877.72 : 640,140.39 = 272,903.39 : x
  2. Step 2: Convert to fraction form
    463,877.72/640,140.39 = 272,903.39/x
  3. Step 3: Cross multiply
    463,877.72x = 640,140.39 × 272,903.39
  4. Step 4: Simplify right side
    463,877.72x = 174,696,479,306.22
  5. Step 5: Solve for x
    x = 174,696,479,306.22/463,877.72
  6. Step 6: Final answer
    x = 376,600.28

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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.