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Finding the Fourth Proportional to 425,632.83, 636,872.20 and 341,136.72

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Solution

The fourth proportional to 425,632.83, 636,872.20 and 341,136.72 is: 510,441.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    425,632.83 : 636,872.20 = 341,136.72 : x
  2. Step 2: Convert to fraction form
    425,632.83/636,872.20 = 341,136.72/x
  3. Step 3: Cross multiply
    425,632.83x = 636,872.20 × 341,136.72
  4. Step 4: Simplify right side
    425,632.83x = 217,260,493,367.18
  5. Step 5: Solve for x
    x = 217,260,493,367.18/425,632.83
  6. Step 6: Final answer
    x = 510,441.11

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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.