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Finding the Fourth Proportional to 265,436.40, 398,154.60 and 165,903.60

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Solution

The fourth proportional to 265,436.40, 398,154.60 and 165,903.60 is: 248,855.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    265,436.40 : 398,154.60 = 165,903.60 : x
  2. Step 2: Convert to fraction form
    265,436.40/398,154.60 = 165,903.60/x
  3. Step 3: Cross multiply
    265,436.40x = 398,154.60 × 165,903.60
  4. Step 4: Simplify right side
    265,436.40x = 66,055,281,496.56
  5. Step 5: Solve for x
    x = 66,055,281,496.56/265,436.40
  6. Step 6: Final answer
    x = 248,855.40

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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.