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Finding the Fourth Proportional to 347,207.60, 520,811.40 and 343,521.20

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Solution

The fourth proportional to 347,207.60, 520,811.40 and 343,521.20 is: 515,281.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    347,207.60 : 520,811.40 = 343,521.20 : x
  2. Step 2: Convert to fraction form
    347,207.60/520,811.40 = 343,521.20/x
  3. Step 3: Cross multiply
    347,207.60x = 520,811.40 × 343,521.20
  4. Step 4: Simplify right side
    347,207.60x = 178,909,757,101.68
  5. Step 5: Solve for x
    x = 178,909,757,101.68/347,207.60
  6. Step 6: Final answer
    x = 515,281.80

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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.