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Finding the Fourth Proportional to 371,671.74, 512,863.47 and 218,676.29

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Solution

The fourth proportional to 371,671.74, 512,863.47 and 218,676.29 is: 301,747.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    371,671.74 : 512,863.47 = 218,676.29 : x
  2. Step 2: Convert to fraction form
    371,671.74/512,863.47 = 218,676.29/x
  3. Step 3: Cross multiply
    371,671.74x = 512,863.47 × 218,676.29
  4. Step 4: Simplify right side
    371,671.74x = 112,151,078,331.81
  5. Step 5: Solve for x
    x = 112,151,078,331.81/371,671.74
  6. Step 6: Final answer
    x = 301,747.66

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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.