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Finding the Fourth Proportional to 225,990.85, 311,818.64 and 130,442.18

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Solution

The fourth proportional to 225,990.85, 311,818.64 and 130,442.18 is: 179,982.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    225,990.85 : 311,818.64 = 130,442.18 : x
  2. Step 2: Convert to fraction form
    225,990.85/311,818.64 = 130,442.18/x
  3. Step 3: Cross multiply
    225,990.85x = 311,818.64 × 130,442.18
  4. Step 4: Simplify right side
    225,990.85x = 40,674,303,166.24
  5. Step 5: Solve for x
    x = 40,674,303,166.24/225,990.85
  6. Step 6: Final answer
    x = 179,982.08

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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.