Home / 419,721.60-629,582.40-242,137.20

Finding the Fourth Proportional to 419,721.60, 629,582.40 and 242,137.20

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Solution

The fourth proportional to 419,721.60, 629,582.40 and 242,137.20 is: 363,205.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    419,721.60 : 629,582.40 = 242,137.20 : x
  2. Step 2: Convert to fraction form
    419,721.60/629,582.40 = 242,137.20/x
  3. Step 3: Cross multiply
    419,721.60x = 629,582.40 × 242,137.20
  4. Step 4: Simplify right side
    419,721.60x = 152,445,319,505.28
  5. Step 5: Solve for x
    x = 152,445,319,505.28/419,721.60
  6. Step 6: Final answer
    x = 363,205.80

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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.