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Finding the Fourth Proportional to 243,198.34, 335,599.74 and 135,775.20

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Solution

The fourth proportional to 243,198.34, 335,599.74 and 135,775.20 is: 187,361.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    243,198.34 : 335,599.74 = 135,775.20 : x
  2. Step 2: Convert to fraction form
    243,198.34/335,599.74 = 135,775.20/x
  3. Step 3: Cross multiply
    243,198.34x = 335,599.74 × 135,775.20
  4. Step 4: Simplify right side
    243,198.34x = 45,566,121,818.45
  5. Step 5: Solve for x
    x = 45,566,121,818.45/243,198.34
  6. Step 6: Final answer
    x = 187,361.98

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.