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Finding the Fourth Proportional to 270,159.26, 405,238.89 and 103,908.38

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Solution

The fourth proportional to 270,159.26, 405,238.89 and 103,908.38 is: 155,862.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    270,159.26 : 405,238.89 = 103,908.38 : x
  2. Step 2: Convert to fraction form
    270,159.26/405,238.89 = 103,908.38/x
  3. Step 3: Cross multiply
    270,159.26x = 405,238.89 × 103,908.38
  4. Step 4: Simplify right side
    270,159.26x = 42,107,716,572.90
  5. Step 5: Solve for x
    x = 42,107,716,572.90/270,159.26
  6. Step 6: Final answer
    x = 155,862.57

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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.