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Finding the Fourth Proportional to 254,700.30, 351,489.61 and 139,991.48

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Solution

The fourth proportional to 254,700.30, 351,489.61 and 139,991.48 is: 193,190.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    254,700.30 : 351,489.61 = 139,991.48 : x
  2. Step 2: Convert to fraction form
    254,700.30/351,489.61 = 139,991.48/x
  3. Step 3: Cross multiply
    254,700.30x = 351,489.61 × 139,991.48
  4. Step 4: Simplify right side
    254,700.30x = 49,205,550,708.52
  5. Step 5: Solve for x
    x = 49,205,550,708.52/254,700.30
  6. Step 6: Final answer
    x = 193,190.00

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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.