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Finding the Fourth Proportional to 251,486.68, 376,995.66 and 172,638.04

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Solution

The fourth proportional to 251,486.68, 376,995.66 and 172,638.04 is: 258,796.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    251,486.68 : 376,995.66 = 172,638.04 : x
  2. Step 2: Convert to fraction form
    251,486.68/376,995.66 = 172,638.04/x
  3. Step 3: Cross multiply
    251,486.68x = 376,995.66 × 172,638.04
  4. Step 4: Simplify right side
    251,486.68x = 65,083,791,830.91
  5. Step 5: Solve for x
    x = 65,083,791,830.91/251,486.68
  6. Step 6: Final answer
    x = 258,796.18

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.