Home / 356,110.90-491,431.73-203,148.82

Finding the Fourth Proportional to 356,110.90, 491,431.73 and 203,148.82

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Solution

The fourth proportional to 356,110.90, 491,431.73 and 203,148.82 is: 280,344.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    356,110.90 : 491,431.73 = 203,148.82 : x
  2. Step 2: Convert to fraction form
    356,110.90/491,431.73 = 203,148.82/x
  3. Step 3: Cross multiply
    356,110.90x = 491,431.73 × 203,148.82
  4. Step 4: Simplify right side
    356,110.90x = 99,833,773,815.74
  5. Step 5: Solve for x
    x = 99,833,773,815.74/356,110.90
  6. Step 6: Final answer
    x = 280,344.62

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.