Home / 445,819.57-668,838.27-142,213.78

Finding the Fourth Proportional to 445,819.57, 668,838.27 and 142,213.78

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Solution

The fourth proportional to 445,819.57, 668,838.27 and 142,213.78 is: 213,355.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    445,819.57 : 668,838.27 = 142,213.78 : x
  2. Step 2: Convert to fraction form
    445,819.57/668,838.27 = 142,213.78/x
  3. Step 3: Cross multiply
    445,819.57x = 668,838.27 × 142,213.78
  4. Step 4: Simplify right side
    445,819.57x = 95,118,018,585.36
  5. Step 5: Solve for x
    x = 95,118,018,585.36/445,819.57
  6. Step 6: Final answer
    x = 213,355.41

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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.