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Finding the Fourth Proportional to 257,239.14, 354,791.87 and 155,158.17

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Solution

The fourth proportional to 257,239.14, 354,791.87 and 155,158.17 is: 213,998.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    257,239.14 : 354,791.87 = 155,158.17 : x
  2. Step 2: Convert to fraction form
    257,239.14/354,791.87 = 155,158.17/x
  3. Step 3: Cross multiply
    257,239.14x = 354,791.87 × 155,158.17
  4. Step 4: Simplify right side
    257,239.14x = 55,048,857,280.08
  5. Step 5: Solve for x
    x = 55,048,857,280.08/257,239.14
  6. Step 6: Final answer
    x = 213,998.76

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1.5x scale

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.