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Finding the Fourth Proportional to 665,388.40, 998,082.60 and 265,831.60

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Solution

The fourth proportional to 665,388.40, 998,082.60 and 265,831.60 is: 398,747.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    665,388.40 : 998,082.60 = 265,831.60 : x
  2. Step 2: Convert to fraction form
    665,388.40/998,082.60 = 265,831.60/x
  3. Step 3: Cross multiply
    665,388.40x = 998,082.60 × 265,831.60
  4. Step 4: Simplify right side
    665,388.40x = 265,321,894,490.16
  5. Step 5: Solve for x
    x = 265,321,894,490.16/665,388.40
  6. Step 6: Final answer
    x = 398,747.40

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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.