Home / 257,426.60-386,129.37-107,628.44

Finding the Fourth Proportional to 257,426.60, 386,129.37 and 107,628.44

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Solution

The fourth proportional to 257,426.60, 386,129.37 and 107,628.44 is: 161,438.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    257,426.60 : 386,129.37 = 107,628.44 : x
  2. Step 2: Convert to fraction form
    257,426.60/386,129.37 = 107,628.44/x
  3. Step 3: Cross multiply
    257,426.60x = 386,129.37 × 107,628.44
  4. Step 4: Simplify right side
    257,426.60x = 41,558,501,731.28
  5. Step 5: Solve for x
    x = 41,558,501,731.28/257,426.60
  6. Step 6: Final answer
    x = 161,438.26

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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.