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Finding the Fourth Proportional to 347,274.40, 520,911.60 and 169,895.20

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Solution

The fourth proportional to 347,274.40, 520,911.60 and 169,895.20 is: 254,842.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    347,274.40 : 520,911.60 = 169,895.20 : x
  2. Step 2: Convert to fraction form
    347,274.40/520,911.60 = 169,895.20/x
  3. Step 3: Cross multiply
    347,274.40x = 520,911.60 × 169,895.20
  4. Step 4: Simplify right side
    347,274.40x = 88,500,380,464.32
  5. Step 5: Solve for x
    x = 88,500,380,464.32/347,274.40
  6. Step 6: Final answer
    x = 254,842.80

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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.