Home / 297,212.28-445,849.56-128,749.68

Finding the Fourth Proportional to 297,212.28, 445,849.56 and 128,749.68

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Solution

The fourth proportional to 297,212.28, 445,849.56 and 128,749.68 is: 193,138.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    297,212.28 : 445,849.56 = 128,749.68 : x
  2. Step 2: Convert to fraction form
    297,212.28/445,849.56 = 128,749.68/x
  3. Step 3: Cross multiply
    297,212.28x = 445,849.56 × 128,749.68
  4. Step 4: Simplify right side
    297,212.28x = 57,402,988,178.14
  5. Step 5: Solve for x
    x = 57,402,988,178.14/297,212.28
  6. Step 6: Final answer
    x = 193,138.01

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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.