Home / 419,821.40-629,732.10-153,590.60

Finding the Fourth Proportional to 419,821.40, 629,732.10 and 153,590.60

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Solution

The fourth proportional to 419,821.40, 629,732.10 and 153,590.60 is: 230,385.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    419,821.40 : 629,732.10 = 153,590.60 : x
  2. Step 2: Convert to fraction form
    419,821.40/629,732.10 = 153,590.60/x
  3. Step 3: Cross multiply
    419,821.40x = 629,732.10 × 153,590.60
  4. Step 4: Simplify right side
    419,821.40x = 96,720,931,078.26
  5. Step 5: Solve for x
    x = 96,720,931,078.26/419,821.40
  6. Step 6: Final answer
    x = 230,385.90

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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.