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Finding the Fourth Proportional to 200,004.80, 300,011.52 and 66,879.68

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Solution

The fourth proportional to 200,004.80, 300,011.52 and 66,879.68 is: 100,320.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    200,004.80 : 300,011.52 = 66,879.68 : x
  2. Step 2: Convert to fraction form
    200,004.80/300,011.52 = 66,879.68/x
  3. Step 3: Cross multiply
    200,004.80x = 300,011.52 × 66,879.68
  4. Step 4: Simplify right side
    200,004.80x = 20,064,674,453.91
  5. Step 5: Solve for x
    x = 20,064,674,453.91/200,004.80
  6. Step 6: Final answer
    x = 100,320.96

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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.