Home / 203,553,719.20-305,214,908.10-138,935,742.40

Finding the Fourth Proportional to 203,553,719.20, 305,214,908.10 and 138,935,742.40

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Solution

The fourth proportional to 203,553,719.20, 305,214,908.10 and 138,935,742.40 is: 208,324,662.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    203,553,719.20 : 305,214,908.10 = 138,935,742.40 : x
  2. Step 2: Convert to fraction form
    203,553,719.20/305,214,908.10 = 138,935,742.40/x
  3. Step 3: Cross multiply
    203,553,719.20x = 305,214,908.10 × 138,935,742.40
  4. Step 4: Simplify right side
    203,553,719.20x = 42,405,259,848,421,280
  5. Step 5: Solve for x
    x = 42,405,259,848,421,280/203,553,719.20
  6. Step 6: Final answer
    x = 208,324,662.48

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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.