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Finding the Fourth Proportional to 399,321.12, 599,250.60 and 162,706.35

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Solution

The fourth proportional to 399,321.12, 599,250.60 and 162,706.35 is: 244,169.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    399,321.12 : 599,250.60 = 162,706.35 : x
  2. Step 2: Convert to fraction form
    399,321.12/599,250.60 = 162,706.35/x
  3. Step 3: Cross multiply
    399,321.12x = 599,250.60 × 162,706.35
  4. Step 4: Simplify right side
    399,321.12x = 97,501,877,861.31
  5. Step 5: Solve for x
    x = 97,501,877,861.31/399,321.12
  6. Step 6: Final answer
    x = 244,169.10

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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.