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Finding the Fourth Proportional to 200,421.36, 300,621.51 and 67,304.34

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Solution

The fourth proportional to 200,421.36, 300,621.51 and 67,304.34 is: 100,952.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    200,421.36 : 300,621.51 = 67,304.34 : x
  2. Step 2: Convert to fraction form
    200,421.36/300,621.51 = 67,304.34/x
  3. Step 3: Cross multiply
    200,421.36x = 300,621.51 × 67,304.34
  4. Step 4: Simplify right side
    200,421.36x = 20,233,132,320.35
  5. Step 5: Solve for x
    x = 20,233,132,320.35/200,421.36
  6. Step 6: Final answer
    x = 100,952.97

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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.