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Finding the Fourth Proportional to 208,728.72, 313,117.92 and 66,524.67

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Solution

The fourth proportional to 208,728.72, 313,117.92 and 66,524.67 is: 99,794.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,728.72 : 313,117.92 = 66,524.67 : x
  2. Step 2: Convert to fraction form
    208,728.72/313,117.92 = 66,524.67/x
  3. Step 3: Cross multiply
    208,728.72x = 313,117.92 × 66,524.67
  4. Step 4: Simplify right side
    208,728.72x = 20,830,066,299.09
  5. Step 5: Solve for x
    x = 20,830,066,299.09/208,728.72
  6. Step 6: Final answer
    x = 99,794.92

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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.