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Finding the Fourth Proportional to 351,338.40, 527,007.60 and 256,874.40

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Solution

The fourth proportional to 351,338.40, 527,007.60 and 256,874.40 is: 385,311.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    351,338.40 : 527,007.60 = 256,874.40 : x
  2. Step 2: Convert to fraction form
    351,338.40/527,007.60 = 256,874.40/x
  3. Step 3: Cross multiply
    351,338.40x = 527,007.60 × 256,874.40
  4. Step 4: Simplify right side
    351,338.40x = 135,374,761,045.44
  5. Step 5: Solve for x
    x = 135,374,761,045.44/351,338.40
  6. Step 6: Final answer
    x = 385,311.60

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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.