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Finding the Fourth Proportional to 341,136.40, 511,704.60 and 91,818.40

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Solution

The fourth proportional to 341,136.40, 511,704.60 and 91,818.40 is: 137,727.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    341,136.40 : 511,704.60 = 91,818.40 : x
  2. Step 2: Convert to fraction form
    341,136.40/511,704.60 = 91,818.40/x
  3. Step 3: Cross multiply
    341,136.40x = 511,704.60 × 91,818.40
  4. Step 4: Simplify right side
    341,136.40x = 46,983,897,644.64
  5. Step 5: Solve for x
    x = 46,983,897,644.64/341,136.40
  6. Step 6: Final answer
    x = 137,727.60

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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.