Home / 419,020.24-628,628.76-138,537.52

Finding the Fourth Proportional to 419,020.24, 628,628.76 and 138,537.52

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Solution

The fourth proportional to 419,020.24, 628,628.76 and 138,537.52 is: 207,838.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    419,020.24 : 628,628.76 = 138,537.52 : x
  2. Step 2: Convert to fraction form
    419,020.24/628,628.76 = 138,537.52/x
  3. Step 3: Cross multiply
    419,020.24x = 628,628.76 × 138,537.52
  4. Step 4: Simplify right side
    419,020.24x = 87,088,669,411.08
  5. Step 5: Solve for x
    x = 87,088,669,411.08/419,020.24
  6. Step 6: Final answer
    x = 207,838.81

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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.