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Finding the Fourth Proportional to 207,695.85, 311,516.09 and 57,923.60

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Solution

The fourth proportional to 207,695.85, 311,516.09 and 57,923.60 is: 86,877.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    207,695.85 : 311,516.09 = 57,923.60 : x
  2. Step 2: Convert to fraction form
    207,695.85/311,516.09 = 57,923.60/x
  3. Step 3: Cross multiply
    207,695.85x = 311,516.09 × 57,923.60
  4. Step 4: Simplify right side
    207,695.85x = 18,044,132,322.32
  5. Step 5: Solve for x
    x = 18,044,132,322.32/207,695.85
  6. Step 6: Final answer
    x = 86,877.67

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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.