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Finding the Fourth Proportional to 265,440.40, 398,160.60 and 165,907.60

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Solution

The fourth proportional to 265,440.40, 398,160.60 and 165,907.60 is: 248,861.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    265,440.40 : 398,160.60 = 165,907.60 : x
  2. Step 2: Convert to fraction form
    265,440.40/398,160.60 = 165,907.60/x
  3. Step 3: Cross multiply
    265,440.40x = 398,160.60 × 165,907.60
  4. Step 4: Simplify right side
    265,440.40x = 66,057,869,560.56
  5. Step 5: Solve for x
    x = 66,057,869,560.56/265,440.40
  6. Step 6: Final answer
    x = 248,861.40

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1.5x scale

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.