Home / 820,135.80-1,230,240.72-251,475.36

Finding the Fourth Proportional to 820,135.80, 1,230,240.72 and 251,475.36

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Solution

The fourth proportional to 820,135.80, 1,230,240.72 and 251,475.36 is: 377,224.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    820,135.80 : 1,230,240.72 = 251,475.36 : x
  2. Step 2: Convert to fraction form
    820,135.80/1,230,240.72 = 251,475.36/x
  3. Step 3: Cross multiply
    820,135.80x = 1,230,240.72 × 251,475.36
  4. Step 4: Simplify right side
    820,135.80x = 309,375,227,948.66
  5. Step 5: Solve for x
    x = 309,375,227,948.66/820,135.80
  6. Step 6: Final answer
    x = 377,224.39

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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.