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Finding the Fourth Proportional to 340,599.53, 511,136.45 and 140,920.97

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Solution

The fourth proportional to 340,599.53, 511,136.45 and 140,920.97 is: 211,479.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    340,599.53 : 511,136.45 = 140,920.97 : x
  2. Step 2: Convert to fraction form
    340,599.53/511,136.45 = 140,920.97/x
  3. Step 3: Cross multiply
    340,599.53x = 511,136.45 × 140,920.97
  4. Step 4: Simplify right side
    340,599.53x = 72,029,841,076.07
  5. Step 5: Solve for x
    x = 72,029,841,076.07/340,599.53
  6. Step 6: Final answer
    x = 211,479.57

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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.