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Finding the Fourth Proportional to 347,655.96, 479,765.42 and 188,679.96

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Solution

The fourth proportional to 347,655.96, 479,765.42 and 188,679.96 is: 260,378.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    347,655.96 : 479,765.42 = 188,679.96 : x
  2. Step 2: Convert to fraction form
    347,655.96/479,765.42 = 188,679.96/x
  3. Step 3: Cross multiply
    347,655.96x = 479,765.42 × 188,679.96
  4. Step 4: Simplify right side
    347,655.96x = 90,522,120,254.98
  5. Step 5: Solve for x
    x = 90,522,120,254.98/347,655.96
  6. Step 6: Final answer
    x = 260,378.45

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.