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Finding the Fourth Proportional to 347,614.60, 521,421.90 and 223,198.60

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Solution

The fourth proportional to 347,614.60, 521,421.90 and 223,198.60 is: 334,797.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    347,614.60 : 521,421.90 = 223,198.60 : x
  2. Step 2: Convert to fraction form
    347,614.60/521,421.90 = 223,198.60/x
  3. Step 3: Cross multiply
    347,614.60x = 521,421.90 × 223,198.60
  4. Step 4: Simplify right side
    347,614.60x = 116,380,638,089.34
  5. Step 5: Solve for x
    x = 116,380,638,089.34/347,614.60
  6. Step 6: Final answer
    x = 334,797.90

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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.