Home / 309,811.28-464,765.52-132,319.28

Finding the Fourth Proportional to 309,811.28, 464,765.52 and 132,319.28

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Solution

The fourth proportional to 309,811.28, 464,765.52 and 132,319.28 is: 198,499.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    309,811.28 : 464,765.52 = 132,319.28 : x
  2. Step 2: Convert to fraction form
    309,811.28/464,765.52 = 132,319.28/x
  3. Step 3: Cross multiply
    309,811.28x = 464,765.52 × 132,319.28
  4. Step 4: Simplify right side
    309,811.28x = 61,497,438,975.23
  5. Step 5: Solve for x
    x = 61,497,438,975.23/309,811.28
  6. Step 6: Final answer
    x = 198,499.68

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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.