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Finding the Fourth Proportional to 347,401.80, 521,151.30 and 147,720.60

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Solution

The fourth proportional to 347,401.80, 521,151.30 and 147,720.60 is: 221,601.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    347,401.80 : 521,151.30 = 147,720.60 : x
  2. Step 2: Convert to fraction form
    347,401.80/521,151.30 = 147,720.60/x
  3. Step 3: Cross multiply
    347,401.80x = 521,151.30 × 147,720.60
  4. Step 4: Simplify right side
    347,401.80x = 76,984,782,726.78
  5. Step 5: Solve for x
    x = 76,984,782,726.78/347,401.80
  6. Step 6: Final answer
    x = 221,601.57

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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.