Home / 272,106.20-407,819.10-139,039.40

Finding the Fourth Proportional to 272,106.20, 407,819.10 and 139,039.40

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Solution

The fourth proportional to 272,106.20, 407,819.10 and 139,039.40 is: 208,385.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    272,106.20 : 407,819.10 = 139,039.40 : x
  2. Step 2: Convert to fraction form
    272,106.20/407,819.10 = 139,039.40/x
  3. Step 3: Cross multiply
    272,106.20x = 407,819.10 × 139,039.40
  4. Step 4: Simplify right side
    272,106.20x = 56,702,922,972.54
  5. Step 5: Solve for x
    x = 56,702,922,972.54/272,106.20
  6. Step 6: Final answer
    x = 208,385.27

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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.