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Finding the Fourth Proportional to 347,790.80, 521,686.20 and 170,325.20

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Solution

The fourth proportional to 347,790.80, 521,686.20 and 170,325.20 is: 255,487.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    347,790.80 : 521,686.20 = 170,325.20 : x
  2. Step 2: Convert to fraction form
    347,790.80/521,686.20 = 170,325.20/x
  3. Step 3: Cross multiply
    347,790.80x = 521,686.20 × 170,325.20
  4. Step 4: Simplify right side
    347,790.80x = 88,856,306,352.24
  5. Step 5: Solve for x
    x = 88,856,306,352.24/347,790.80
  6. Step 6: Final answer
    x = 255,487.80

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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.