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Finding the Fourth Proportional to 412,241.80, 618,297.90 and 145,964.20

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Solution

The fourth proportional to 412,241.80, 618,297.90 and 145,964.20 is: 218,923.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    412,241.80 : 618,297.90 = 145,964.20 : x
  2. Step 2: Convert to fraction form
    412,241.80/618,297.90 = 145,964.20/x
  3. Step 3: Cross multiply
    412,241.80x = 618,297.90 × 145,964.20
  4. Step 4: Simplify right side
    412,241.80x = 90,249,358,335.18
  5. Step 5: Solve for x
    x = 90,249,358,335.18/412,241.80
  6. Step 6: Final answer
    x = 218,923.36

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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.