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Finding the Fourth Proportional to 424,202.82, 636,327.78 and 139,881.88

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Solution

The fourth proportional to 424,202.82, 636,327.78 and 139,881.88 is: 209,830.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    424,202.82 : 636,327.78 = 139,881.88 : x
  2. Step 2: Convert to fraction form
    424,202.82/636,327.78 = 139,881.88/x
  3. Step 3: Cross multiply
    424,202.82x = 636,327.78 × 139,881.88
  4. Step 4: Simplify right side
    424,202.82x = 89,010,726,162.63
  5. Step 5: Solve for x
    x = 89,010,726,162.63/424,202.82
  6. Step 6: Final answer
    x = 209,830.59

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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.