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Finding the Fourth Proportional to 199,384.40, 299,076.60 and 155,147.60

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Solution

The fourth proportional to 199,384.40, 299,076.60 and 155,147.60 is: 232,721.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    199,384.40 : 299,076.60 = 155,147.60 : x
  2. Step 2: Convert to fraction form
    199,384.40/299,076.60 = 155,147.60/x
  3. Step 3: Cross multiply
    199,384.40x = 299,076.60 × 155,147.60
  4. Step 4: Simplify right side
    199,384.40x = 46,401,016,706.16
  5. Step 5: Solve for x
    x = 46,401,016,706.16/199,384.40
  6. Step 6: Final answer
    x = 232,721.40

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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.