Home / 203,427.70-305,141.55-140,442.10

Finding the Fourth Proportional to 203,427.70, 305,141.55 and 140,442.10

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Solution

The fourth proportional to 203,427.70, 305,141.55 and 140,442.10 is: 210,663.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    203,427.70 : 305,141.55 = 140,442.10 : x
  2. Step 2: Convert to fraction form
    203,427.70/305,141.55 = 140,442.10/x
  3. Step 3: Cross multiply
    203,427.70x = 305,141.55 × 140,442.10
  4. Step 4: Simplify right side
    203,427.70x = 42,854,720,079.26
  5. Step 5: Solve for x
    x = 42,854,720,079.26/203,427.70
  6. Step 6: Final answer
    x = 210,663.15

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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.