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Finding the Fourth Proportional to 252,088.92, 347,866.34 and 138,911.67

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Solution

The fourth proportional to 252,088.92, 347,866.34 and 138,911.67 is: 191,689.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    252,088.92 : 347,866.34 = 138,911.67 : x
  2. Step 2: Convert to fraction form
    252,088.92/347,866.34 = 138,911.67/x
  3. Step 3: Cross multiply
    252,088.92x = 347,866.34 × 138,911.67
  4. Step 4: Simplify right side
    252,088.92x = 48,322,693,531.63
  5. Step 5: Solve for x
    x = 48,322,693,531.63/252,088.92
  6. Step 6: Final answer
    x = 191,689.08

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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.