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Finding the Fourth Proportional to 339,659.62, 509,292.63 and 139,754.18

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Solution

The fourth proportional to 339,659.62, 509,292.63 and 139,754.18 is: 209,550.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    339,659.62 : 509,292.63 = 139,754.18 : x
  2. Step 2: Convert to fraction form
    339,659.62/509,292.63 = 139,754.18/x
  3. Step 3: Cross multiply
    339,659.62x = 509,292.63 × 139,754.18
  4. Step 4: Simplify right side
    339,659.62x = 71,175,775,158.93
  5. Step 5: Solve for x
    x = 71,175,775,158.93/339,659.62
  6. Step 6: Final answer
    x = 209,550.30

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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.