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Finding the Fourth Proportional to 259,059.30, 387,986.70 and 250,079.64

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Solution

The fourth proportional to 259,059.30, 387,986.70 and 250,079.64 is: 374,538.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    259,059.30 : 387,986.70 = 250,079.64 : x
  2. Step 2: Convert to fraction form
    259,059.30/387,986.70 = 250,079.64/x
  3. Step 3: Cross multiply
    259,059.30x = 387,986.70 × 250,079.64
  4. Step 4: Simplify right side
    259,059.30x = 97,027,574,260.79
  5. Step 5: Solve for x
    x = 97,027,574,260.79/259,059.30
  6. Step 6: Final answer
    x = 374,538.09

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.