Home / 305,188.32-457,695-91,976.88

Finding the Fourth Proportional to 305,188.32, 457,695 and 91,976.88

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Solution

The fourth proportional to 305,188.32, 457,695 and 91,976.88 is: 137,938.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    305,188.32 : 457,695 = 91,976.88 : x
  2. Step 2: Convert to fraction form
    305,188.32/457,695 = 91,976.88/x
  3. Step 3: Cross multiply
    305,188.32x = 457,695 × 91,976.88
  4. Step 4: Simplify right side
    305,188.32x = 42,097,358,091.60
  5. Step 5: Solve for x
    x = 42,097,358,091.60/305,188.32
  6. Step 6: Final answer
    x = 137,938.96

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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.