Home / 225,618.18-311,319.44-139,663.62

Finding the Fourth Proportional to 225,618.18, 311,319.44 and 139,663.62

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Solution

The fourth proportional to 225,618.18, 311,319.44 and 139,663.62 is: 192,714.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    225,618.18 : 311,319.44 = 139,663.62 : x
  2. Step 2: Convert to fraction form
    225,618.18/311,319.44 = 139,663.62/x
  3. Step 3: Cross multiply
    225,618.18x = 311,319.44 × 139,663.62
  4. Step 4: Simplify right side
    225,618.18x = 43,479,999,966.77
  5. Step 5: Solve for x
    x = 43,479,999,966.77/225,618.18
  6. Step 6: Final answer
    x = 192,714.97

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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.