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Finding the Fourth Proportional to 253,647.02, 350,039.22 and 138,931.94

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Solution

The fourth proportional to 253,647.02, 350,039.22 and 138,931.94 is: 191,729.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    253,647.02 : 350,039.22 = 138,931.94 : x
  2. Step 2: Convert to fraction form
    253,647.02/350,039.22 = 138,931.94/x
  3. Step 3: Cross multiply
    253,647.02x = 350,039.22 × 138,931.94
  4. Step 4: Simplify right side
    253,647.02x = 48,631,627,910.69
  5. Step 5: Solve for x
    x = 48,631,627,910.69/253,647.02
  6. Step 6: Final answer
    x = 191,729.55

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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.