Home / 219,904.90-303,501.39-139,339.97

Finding the Fourth Proportional to 219,904.90, 303,501.39 and 139,339.97

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Solution

The fourth proportional to 219,904.90, 303,501.39 and 139,339.97 is: 192,309.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    219,904.90 : 303,501.39 = 139,339.97 : x
  2. Step 2: Convert to fraction form
    219,904.90/303,501.39 = 139,339.97/x
  3. Step 3: Cross multiply
    219,904.90x = 303,501.39 × 139,339.97
  4. Step 4: Simplify right side
    219,904.90x = 42,289,874,577.56
  5. Step 5: Solve for x
    x = 42,289,874,577.56/219,904.90
  6. Step 6: Final answer
    x = 192,309.83

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.