Home / 207,619.40-311,313.90-89,270.60

Finding the Fourth Proportional to 207,619.40, 311,313.90 and 89,270.60

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Solution

The fourth proportional to 207,619.40, 311,313.90 and 89,270.60 is: 133,856.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    207,619.40 : 311,313.90 = 89,270.60 : x
  2. Step 2: Convert to fraction form
    207,619.40/311,313.90 = 89,270.60/x
  3. Step 3: Cross multiply
    207,619.40x = 311,313.90 × 89,270.60
  4. Step 4: Simplify right side
    207,619.40x = 27,791,178,641.34
  5. Step 5: Solve for x
    x = 27,791,178,641.34/207,619.40
  6. Step 6: Final answer
    x = 133,856.37

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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.