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Finding the Fourth Proportional to 252,088.67, 347,865.99 and 138,911.42

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Solution

The fourth proportional to 252,088.67, 347,865.99 and 138,911.42 is: 191,688.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    252,088.67 : 347,865.99 = 138,911.42 : x
  2. Step 2: Convert to fraction form
    252,088.67/347,865.99 = 138,911.42/x
  3. Step 3: Cross multiply
    252,088.67x = 347,865.99 × 138,911.42
  4. Step 4: Simplify right side
    252,088.67x = 48,322,558,640.61
  5. Step 5: Solve for x
    x = 48,322,558,640.61/252,088.67
  6. Step 6: Final answer
    x = 191,688.74

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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.