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Finding the Fourth Proportional to 225,793.78, 311,595.33 and 122,428.06

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Solution

The fourth proportional to 225,793.78, 311,595.33 and 122,428.06 is: 168,950.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    225,793.78 : 311,595.33 = 122,428.06 : x
  2. Step 2: Convert to fraction form
    225,793.78/311,595.33 = 122,428.06/x
  3. Step 3: Cross multiply
    225,793.78x = 311,595.33 × 122,428.06
  4. Step 4: Simplify right side
    225,793.78x = 38,148,011,756.96
  5. Step 5: Solve for x
    x = 38,148,011,756.96/225,793.78
  6. Step 6: Final answer
    x = 168,950.68

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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.