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Finding the Fourth Proportional to 197,108.40, 295,662.60 and 72,433.20

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Solution

The fourth proportional to 197,108.40, 295,662.60 and 72,433.20 is: 108,649.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    197,108.40 : 295,662.60 = 72,433.20 : x
  2. Step 2: Convert to fraction form
    197,108.40/295,662.60 = 72,433.20/x
  3. Step 3: Cross multiply
    197,108.40x = 295,662.60 × 72,433.20
  4. Step 4: Simplify right side
    197,108.40x = 21,415,788,238.32
  5. Step 5: Solve for x
    x = 21,415,788,238.32/197,108.40
  6. Step 6: Final answer
    x = 108,649.80

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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.