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Finding the Fourth Proportional to 339,357.80, 508,907.10 and 102,621.80

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Solution

The fourth proportional to 339,357.80, 508,907.10 and 102,621.80 is: 153,893.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    339,357.80 : 508,907.10 = 102,621.80 : x
  2. Step 2: Convert to fraction form
    339,357.80/508,907.10 = 102,621.80/x
  3. Step 3: Cross multiply
    339,357.80x = 508,907.10 × 102,621.80
  4. Step 4: Simplify right side
    339,357.80x = 52,224,962,634.78
  5. Step 5: Solve for x
    x = 52,224,962,634.78/339,357.80
  6. Step 6: Final answer
    x = 153,893.51

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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.