Home / 207,895.40-311,850.30-65,742.20

Finding the Fourth Proportional to 207,895.40, 311,850.30 and 65,742.20

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Solution

The fourth proportional to 207,895.40, 311,850.30 and 65,742.20 is: 98,615.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    207,895.40 : 311,850.30 = 65,742.20 : x
  2. Step 2: Convert to fraction form
    207,895.40/311,850.30 = 65,742.20/x
  3. Step 3: Cross multiply
    207,895.40x = 311,850.30 × 65,742.20
  4. Step 4: Simplify right side
    207,895.40x = 20,501,724,792.66
  5. Step 5: Solve for x
    x = 20,501,724,792.66/207,895.40
  6. Step 6: Final answer
    x = 98,615.58

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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.