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Finding the Fourth Proportional to 442,880.40, 664,425.94 and 143,361.02

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Solution

The fourth proportional to 442,880.40, 664,425.94 and 143,361.02 is: 215,075.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    442,880.40 : 664,425.94 = 143,361.02 : x
  2. Step 2: Convert to fraction form
    442,880.40/664,425.94 = 143,361.02/x
  3. Step 3: Cross multiply
    442,880.40x = 664,425.94 × 143,361.02
  4. Step 4: Simplify right side
    442,880.40x = 95,252,780,472.86
  5. Step 5: Solve for x
    x = 95,252,780,472.86/442,880.40
  6. Step 6: Final answer
    x = 215,075.63

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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.