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Finding the Fourth Proportional to 347,819.70, 521,729.55 and 170,672.70

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Solution

The fourth proportional to 347,819.70, 521,729.55 and 170,672.70 is: 256,009.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    347,819.70 : 521,729.55 = 170,672.70 : x
  2. Step 2: Convert to fraction form
    347,819.70/521,729.55 = 170,672.70/x
  3. Step 3: Cross multiply
    347,819.70x = 521,729.55 × 170,672.70
  4. Step 4: Simplify right side
    347,819.70x = 89,044,990,968.29
  5. Step 5: Solve for x
    x = 89,044,990,968.29/347,819.70
  6. Step 6: Final answer
    x = 256,009.05

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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.