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Finding the Fourth Proportional to 257,353.90, 386,033.73 and 107,616.94

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Solution

The fourth proportional to 257,353.90, 386,033.73 and 107,616.94 is: 161,426.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    257,353.90 : 386,033.73 = 107,616.94 : x
  2. Step 2: Convert to fraction form
    257,353.90/386,033.73 = 107,616.94/x
  3. Step 3: Cross multiply
    257,353.90x = 386,033.73 × 107,616.94
  4. Step 4: Simplify right side
    257,353.90x = 41,543,768,759.39
  5. Step 5: Solve for x
    x = 41,543,768,759.39/257,353.90
  6. Step 6: Final answer
    x = 161,426.61

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1.5x scale

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.