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Finding the Fourth Proportional to 371,521.89, 512,712.88 and 208,185.29

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Solution

The fourth proportional to 371,521.89, 512,712.88 and 208,185.29 is: 287,302.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    371,521.89 : 512,712.88 = 208,185.29 : x
  2. Step 2: Convert to fraction form
    371,521.89/512,712.88 = 208,185.29/x
  3. Step 3: Cross multiply
    371,521.89x = 512,712.88 × 208,185.29
  4. Step 4: Simplify right side
    371,521.89x = 106,739,277,045.97
  5. Step 5: Solve for x
    x = 106,739,277,045.97/371,521.89
  6. Step 6: Final answer
    x = 287,302.80

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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.