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Finding the Fourth Proportional to 339,395.94, 509,091 and 136,988.94

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Solution

The fourth proportional to 339,395.94, 509,091 and 136,988.94 is: 205,482.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    339,395.94 : 509,091 = 136,988.94 : x
  2. Step 2: Convert to fraction form
    339,395.94/509,091 = 136,988.94/x
  3. Step 3: Cross multiply
    339,395.94x = 509,091 × 136,988.94
  4. Step 4: Simplify right side
    339,395.94x = 69,739,836,453.54
  5. Step 5: Solve for x
    x = 69,739,836,453.54/339,395.94
  6. Step 6: Final answer
    x = 205,482.24

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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.