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Finding the Fourth Proportional to 558,236.34, 770,349.69 and 316,540.98

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Solution

The fourth proportional to 558,236.34, 770,349.69 and 316,540.98 is: 436,817.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    558,236.34 : 770,349.69 = 316,540.98 : x
  2. Step 2: Convert to fraction form
    558,236.34/770,349.69 = 316,540.98/x
  3. Step 3: Cross multiply
    558,236.34x = 770,349.69 × 316,540.98
  4. Step 4: Simplify right side
    558,236.34x = 243,847,245,815.30
  5. Step 5: Solve for x
    x = 243,847,245,815.30/558,236.34
  6. Step 6: Final answer
    x = 436,817.22

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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.