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Finding the Fourth Proportional to 198,803.55, 297,619.43 and 131,210.90

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Solution

The fourth proportional to 198,803.55, 297,619.43 and 131,210.90 is: 196,429.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    198,803.55 : 297,619.43 = 131,210.90 : x
  2. Step 2: Convert to fraction form
    198,803.55/297,619.43 = 131,210.90/x
  3. Step 3: Cross multiply
    198,803.55x = 297,619.43 × 131,210.90
  4. Step 4: Simplify right side
    198,803.55x = 39,050,911,123.64
  5. Step 5: Solve for x
    x = 39,050,911,123.64/198,803.55
  6. Step 6: Final answer
    x = 196,429.65

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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.