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Finding the Fourth Proportional to 530,131.73, 731,527.17 and 315,230.27

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Solution

The fourth proportional to 530,131.73, 731,527.17 and 315,230.27 is: 434,985.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    530,131.73 : 731,527.17 = 315,230.27 : x
  2. Step 2: Convert to fraction form
    530,131.73/731,527.17 = 315,230.27/x
  3. Step 3: Cross multiply
    530,131.73x = 731,527.17 × 315,230.27
  4. Step 4: Simplify right side
    530,131.73x = 230,599,507,311.44
  5. Step 5: Solve for x
    x = 230,599,507,311.44/530,131.73
  6. Step 6: Final answer
    x = 434,985.30

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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.