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Finding the Fourth Proportional to 424,474.34, 636,790.26 and 140,184.59

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Solution

The fourth proportional to 424,474.34, 636,790.26 and 140,184.59 is: 210,302.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    424,474.34 : 636,790.26 = 140,184.59 : x
  2. Step 2: Convert to fraction form
    424,474.34/636,790.26 = 140,184.59/x
  3. Step 3: Cross multiply
    424,474.34x = 636,790.26 × 140,184.59
  4. Step 4: Simplify right side
    424,474.34x = 89,268,181,514.09
  5. Step 5: Solve for x
    x = 89,268,181,514.09/424,474.34
  6. Step 6: Final answer
    x = 210,302.89

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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.