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Finding the Fourth Proportional to 424,343.04, 636,379.84 and 143,794.56

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Solution

The fourth proportional to 424,343.04, 636,379.84 and 143,794.56 is: 215,646.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    424,343.04 : 636,379.84 = 143,794.56 : x
  2. Step 2: Convert to fraction form
    424,343.04/636,379.84 = 143,794.56/x
  3. Step 3: Cross multiply
    424,343.04x = 636,379.84 × 143,794.56
  4. Step 4: Simplify right side
    424,343.04x = 91,507,959,085.67
  5. Step 5: Solve for x
    x = 91,507,959,085.67/424,343.04
  6. Step 6: Final answer
    x = 215,646.19

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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.