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Finding the Fourth Proportional to 424,155.43, 636,216.53 and 143,672.67

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Solution

The fourth proportional to 424,155.43, 636,216.53 and 143,672.67 is: 215,503.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    424,155.43 : 636,216.53 = 143,672.67 : x
  2. Step 2: Convert to fraction form
    424,155.43/636,216.53 = 143,672.67/x
  3. Step 3: Cross multiply
    424,155.43x = 636,216.53 × 143,672.67
  4. Step 4: Simplify right side
    424,155.43x = 91,406,926,844.87
  5. Step 5: Solve for x
    x = 91,406,926,844.87/424,155.43
  6. Step 6: Final answer
    x = 215,503.38

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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.