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Finding the Fourth Proportional to 351,086.40, 526,629.60 and 281,102.40

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Solution

The fourth proportional to 351,086.40, 526,629.60 and 281,102.40 is: 421,653.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    351,086.40 : 526,629.60 = 281,102.40 : x
  2. Step 2: Convert to fraction form
    351,086.40/526,629.60 = 281,102.40/x
  3. Step 3: Cross multiply
    351,086.40x = 526,629.60 × 281,102.40
  4. Step 4: Simplify right side
    351,086.40x = 148,036,844,471.04
  5. Step 5: Solve for x
    x = 148,036,844,471.04/351,086.40
  6. Step 6: Final answer
    x = 421,653.60

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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.