Home / 426,828.46-640,312.18-199,351.56

Finding the Fourth Proportional to 426,828.46, 640,312.18 and 199,351.56

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Solution

The fourth proportional to 426,828.46, 640,312.18 and 199,351.56 is: 299,059.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    426,828.46 : 640,312.18 = 199,351.56 : x
  2. Step 2: Convert to fraction form
    426,828.46/640,312.18 = 199,351.56/x
  3. Step 3: Cross multiply
    426,828.46x = 640,312.18 × 199,351.56
  4. Step 4: Simplify right side
    426,828.46x = 127,647,231,970.00
  5. Step 5: Solve for x
    x = 127,647,231,970.00/426,828.46
  6. Step 6: Final answer
    x = 299,059.80

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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.