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Finding the Fourth Proportional to 486,651.72, 729,979.26 and 149,690.10

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Solution

The fourth proportional to 486,651.72, 729,979.26 and 149,690.10 is: 224,535.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    486,651.72 : 729,979.26 = 149,690.10 : x
  2. Step 2: Convert to fraction form
    486,651.72/729,979.26 = 149,690.10/x
  3. Step 3: Cross multiply
    486,651.72x = 729,979.26 × 149,690.10
  4. Step 4: Simplify right side
    486,651.72x = 109,270,668,427.33
  5. Step 5: Solve for x
    x = 109,270,668,427.33/486,651.72
  6. Step 6: Final answer
    x = 224,535.67

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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.