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Finding the Fourth Proportional to 347,715.80, 521,573.70 and 268,886.60

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Solution

The fourth proportional to 347,715.80, 521,573.70 and 268,886.60 is: 403,329.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    347,715.80 : 521,573.70 = 268,886.60 : x
  2. Step 2: Convert to fraction form
    347,715.80/521,573.70 = 268,886.60/x
  3. Step 3: Cross multiply
    347,715.80x = 521,573.70 × 268,886.60
  4. Step 4: Simplify right side
    347,715.80x = 140,244,178,842.42
  5. Step 5: Solve for x
    x = 140,244,178,842.42/347,715.80
  6. Step 6: Final answer
    x = 403,329.90

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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.