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Finding the Fourth Proportional to 253,716.60, 350,128.93 and 138,999.34

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Solution

The fourth proportional to 253,716.60, 350,128.93 and 138,999.34 is: 191,819.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    253,716.60 : 350,128.93 = 138,999.34 : x
  2. Step 2: Convert to fraction form
    253,716.60/350,128.93 = 138,999.34/x
  3. Step 3: Cross multiply
    253,716.60x = 350,128.93 × 138,999.34
  4. Step 4: Simplify right side
    253,716.60x = 48,667,690,535.69
  5. Step 5: Solve for x
    x = 48,667,690,535.69/253,716.60
  6. Step 6: Final answer
    x = 191,819.10

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1.5x scale

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.