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Finding the Fourth Proportional to 353,640.84, 488,034.88 and 217,753.16

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Solution

The fourth proportional to 353,640.84, 488,034.88 and 217,753.16 is: 300,505.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    353,640.84 : 488,034.88 = 217,753.16 : x
  2. Step 2: Convert to fraction form
    353,640.84/488,034.88 = 217,753.16/x
  3. Step 3: Cross multiply
    353,640.84x = 488,034.88 × 217,753.16
  4. Step 4: Simplify right side
    353,640.84x = 106,271,137,310.22
  5. Step 5: Solve for x
    x = 106,271,137,310.22/353,640.84
  6. Step 6: Final answer
    x = 300,505.84

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.