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Finding the Fourth Proportional to 198,077.60, 297,116.40 and 131,722.40

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Solution

The fourth proportional to 198,077.60, 297,116.40 and 131,722.40 is: 197,583.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    198,077.60 : 297,116.40 = 131,722.40 : x
  2. Step 2: Convert to fraction form
    198,077.60/297,116.40 = 131,722.40/x
  3. Step 3: Cross multiply
    198,077.60x = 297,116.40 × 131,722.40
  4. Step 4: Simplify right side
    198,077.60x = 39,136,885,287.36
  5. Step 5: Solve for x
    x = 39,136,885,287.36/198,077.60
  6. Step 6: Final answer
    x = 197,583.60

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1.5x scale

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.