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Finding the Fourth Proportional to 265,425.40, 398,138.10 and 165,892.60

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Solution

The fourth proportional to 265,425.40, 398,138.10 and 165,892.60 is: 248,838.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    265,425.40 : 398,138.10 = 165,892.60 : x
  2. Step 2: Convert to fraction form
    265,425.40/398,138.10 = 165,892.60/x
  3. Step 3: Cross multiply
    265,425.40x = 398,138.10 × 165,892.60
  4. Step 4: Simplify right side
    265,425.40x = 66,048,164,568.06
  5. Step 5: Solve for x
    x = 66,048,164,568.06/265,425.40
  6. Step 6: Final answer
    x = 248,838.90

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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.