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Finding the Fourth Proportional to 413,425.90, 620,102.40 and 113,879.80

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Solution

The fourth proportional to 413,425.90, 620,102.40 and 113,879.80 is: 170,809.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    413,425.90 : 620,102.40 = 113,879.80 : x
  2. Step 2: Convert to fraction form
    413,425.90/620,102.40 = 113,879.80/x
  3. Step 3: Cross multiply
    413,425.90x = 620,102.40 × 113,879.80
  4. Step 4: Simplify right side
    413,425.90x = 70,617,137,291.52
  5. Step 5: Solve for x
    x = 70,617,137,291.52/413,425.90
  6. Step 6: Final answer
    x = 170,809.66

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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.