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Finding the Fourth Proportional to 424,163.70, 636,228.90 and 143,680.92

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Solution

The fourth proportional to 424,163.70, 636,228.90 and 143,680.92 is: 215,515.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    424,163.70 : 636,228.90 = 143,680.92 : x
  2. Step 2: Convert to fraction form
    424,163.70/636,228.90 = 143,680.92/x
  3. Step 3: Cross multiply
    424,163.70x = 636,228.90 × 143,680.92
  4. Step 4: Simplify right side
    424,163.70x = 91,413,953,682.59
  5. Step 5: Solve for x
    x = 91,413,953,682.59/424,163.70
  6. Step 6: Final answer
    x = 215,515.74

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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.