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Finding the Fourth Proportional to 339,600.21, 509,395.02 and 86,878.52

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Solution

The fourth proportional to 339,600.21, 509,395.02 and 86,878.52 is: 130,316.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    339,600.21 : 509,395.02 = 86,878.52 : x
  2. Step 2: Convert to fraction form
    339,600.21/509,395.02 = 86,878.52/x
  3. Step 3: Cross multiply
    339,600.21x = 509,395.02 × 86,878.52
  4. Step 4: Simplify right side
    339,600.21x = 44,255,487,763.38
  5. Step 5: Solve for x
    x = 44,255,487,763.38/339,600.21
  6. Step 6: Final answer
    x = 130,316.43

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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.