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Finding the Fourth Proportional to 424,590.53, 636,360.91 and 214,113.65

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Solution

The fourth proportional to 424,590.53, 636,360.91 and 214,113.65 is: 320,905.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    424,590.53 : 636,360.91 = 214,113.65 : x
  2. Step 2: Convert to fraction form
    424,590.53/636,360.91 = 214,113.65/x
  3. Step 3: Cross multiply
    424,590.53x = 636,360.91 × 214,113.65
  4. Step 4: Simplify right side
    424,590.53x = 136,253,553,440.33
  5. Step 5: Solve for x
    x = 136,253,553,440.33/424,590.53
  6. Step 6: Final answer
    x = 320,905.78

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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.