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Finding the Fourth Proportional to 198,393.30, 297,513.80 and 84,468.88

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Solution

The fourth proportional to 198,393.30, 297,513.80 and 84,468.88 is: 126,670.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    198,393.30 : 297,513.80 = 84,468.88 : x
  2. Step 2: Convert to fraction form
    198,393.30/297,513.80 = 84,468.88/x
  3. Step 3: Cross multiply
    198,393.30x = 297,513.80 × 84,468.88
  4. Step 4: Simplify right side
    198,393.30x = 25,130,657,259.37
  5. Step 5: Solve for x
    x = 25,130,657,259.37/198,393.30
  6. Step 6: Final answer
    x = 126,670.90

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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.