Home / 419,531.10-629,387.78-153,291.20

Finding the Fourth Proportional to 419,531.10, 629,387.78 and 153,291.20

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Solution

The fourth proportional to 419,531.10, 629,387.78 and 153,291.20 is: 229,970.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    419,531.10 : 629,387.78 = 153,291.20 : x
  2. Step 2: Convert to fraction form
    419,531.10/629,387.78 = 153,291.20/x
  3. Step 3: Cross multiply
    419,531.10x = 629,387.78 × 153,291.20
  4. Step 4: Simplify right side
    419,531.10x = 96,479,604,148.14
  5. Step 5: Solve for x
    x = 96,479,604,148.14/419,531.10
  6. Step 6: Final answer
    x = 229,970.09

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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.