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Finding the Fourth Proportional to 251,492.23, 347,053.57 and 138,316.87

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Solution

The fourth proportional to 251,492.23, 347,053.57 and 138,316.87 is: 190,874.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    251,492.23 : 347,053.57 = 138,316.87 : x
  2. Step 2: Convert to fraction form
    251,492.23/347,053.57 = 138,316.87/x
  3. Step 3: Cross multiply
    251,492.23x = 347,053.57 × 138,316.87
  4. Step 4: Simplify right side
    251,492.23x = 48,003,363,524.73
  5. Step 5: Solve for x
    x = 48,003,363,524.73/251,492.23
  6. Step 6: Final answer
    x = 190,874.14

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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.