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Finding the Fourth Proportional to 644,169.28, 966,012 and 223,343.68

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Solution

The fourth proportional to 644,169.28, 966,012 and 223,343.68 is: 334,931.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    644,169.28 : 966,012 = 223,343.68 : x
  2. Step 2: Convert to fraction form
    644,169.28/966,012 = 223,343.68/x
  3. Step 3: Cross multiply
    644,169.28x = 966,012 × 223,343.68
  4. Step 4: Simplify right side
    644,169.28x = 215,752,675,004.16
  5. Step 5: Solve for x
    x = 215,752,675,004.16/644,169.28
  6. Step 6: Final answer
    x = 334,931.64

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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.