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Finding the Fourth Proportional to 201,247.20, 301,870.80 and 61,005.78

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Solution

The fourth proportional to 201,247.20, 301,870.80 and 61,005.78 is: 91,508.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    201,247.20 : 301,870.80 = 61,005.78 : x
  2. Step 2: Convert to fraction form
    201,247.20/301,870.80 = 61,005.78/x
  3. Step 3: Cross multiply
    201,247.20x = 301,870.80 × 61,005.78
  4. Step 4: Simplify right side
    201,247.20x = 18,415,863,613.22
  5. Step 5: Solve for x
    x = 18,415,863,613.22/201,247.20
  6. Step 6: Final answer
    x = 91,508.67

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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.