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Finding the Fourth Proportional to 205,136.40, 307,704.60 and 197,360.40

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Solution

The fourth proportional to 205,136.40, 307,704.60 and 197,360.40 is: 296,040.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    205,136.40 : 307,704.60 = 197,360.40 : x
  2. Step 2: Convert to fraction form
    205,136.40/307,704.60 = 197,360.40/x
  3. Step 3: Cross multiply
    205,136.40x = 307,704.60 × 197,360.40
  4. Step 4: Simplify right side
    205,136.40x = 60,728,702,937.84
  5. Step 5: Solve for x
    x = 60,728,702,937.84/205,136.40
  6. Step 6: Final answer
    x = 296,040.60

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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.