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Finding the Fourth Proportional to 332,739.78, 499,109.67 and 83,421.78

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Solution

The fourth proportional to 332,739.78, 499,109.67 and 83,421.78 is: 125,132.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    332,739.78 : 499,109.67 = 83,421.78 : x
  2. Step 2: Convert to fraction form
    332,739.78/499,109.67 = 83,421.78/x
  3. Step 3: Cross multiply
    332,739.78x = 499,109.67 × 83,421.78
  4. Step 4: Simplify right side
    332,739.78x = 41,636,617,086.61
  5. Step 5: Solve for x
    x = 41,636,617,086.61/332,739.78
  6. Step 6: Final answer
    x = 125,132.67

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Similar ratio
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1.5x scale

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.