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Finding the Fourth Proportional to 347,960.80, 521,941.20 and 98,644.96

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Solution

The fourth proportional to 347,960.80, 521,941.20 and 98,644.96 is: 147,967.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    347,960.80 : 521,941.20 = 98,644.96 : x
  2. Step 2: Convert to fraction form
    347,960.80/521,941.20 = 98,644.96/x
  3. Step 3: Cross multiply
    347,960.80x = 521,941.20 × 98,644.96
  4. Step 4: Simplify right side
    347,960.80x = 51,486,868,796.35
  5. Step 5: Solve for x
    x = 51,486,868,796.35/347,960.80
  6. Step 6: Final answer
    x = 147,967.44

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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.