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Finding the Fourth Proportional to 399,630.60, 599,518.80 and 162,997.20

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Solution

The fourth proportional to 399,630.60, 599,518.80 and 162,997.20 is: 244,525.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    399,630.60 : 599,518.80 = 162,997.20 : x
  2. Step 2: Convert to fraction form
    399,630.60/599,518.80 = 162,997.20/x
  3. Step 3: Cross multiply
    399,630.60x = 599,518.80 × 162,997.20
  4. Step 4: Simplify right side
    399,630.60x = 97,719,885,747.36
  5. Step 5: Solve for x
    x = 97,719,885,747.36/399,630.60
  6. Step 6: Final answer
    x = 244,525.53

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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.