Home / 419,815.83-629,817.30-153,570.45

Finding the Fourth Proportional to 419,815.83, 629,817.30 and 153,570.45

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Solution

The fourth proportional to 419,815.83, 629,817.30 and 153,570.45 is: 230,389.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    419,815.83 : 629,817.30 = 153,570.45 : x
  2. Step 2: Convert to fraction form
    419,815.83/629,817.30 = 153,570.45/x
  3. Step 3: Cross multiply
    419,815.83x = 629,817.30 × 153,570.45
  4. Step 4: Simplify right side
    419,815.83x = 96,721,326,178.79
  5. Step 5: Solve for x
    x = 96,721,326,178.79/419,815.83
  6. Step 6: Final answer
    x = 230,389.90

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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.