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Finding the Fourth Proportional to 463,868.66, 640,175.67 and 272,918.96

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Solution

The fourth proportional to 463,868.66, 640,175.67 and 272,918.96 is: 376,649.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    463,868.66 : 640,175.67 = 272,918.96 : x
  2. Step 2: Convert to fraction form
    463,868.66/640,175.67 = 272,918.96/x
  3. Step 3: Cross multiply
    463,868.66x = 640,175.67 × 272,918.96
  4. Step 4: Simplify right side
    463,868.66x = 174,716,078,073.70
  5. Step 5: Solve for x
    x = 174,716,078,073.70/463,868.66
  6. Step 6: Final answer
    x = 376,649.89

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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.