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Finding the Fourth Proportional to 443,428.42, 611,908.41 and 242,185.54

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Solution

The fourth proportional to 443,428.42, 611,908.41 and 242,185.54 is: 334,203.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    443,428.42 : 611,908.41 = 242,185.54 : x
  2. Step 2: Convert to fraction form
    443,428.42/611,908.41 = 242,185.54/x
  3. Step 3: Cross multiply
    443,428.42x = 611,908.41 × 242,185.54
  4. Step 4: Simplify right side
    443,428.42x = 148,195,368,706.39
  5. Step 5: Solve for x
    x = 148,195,368,706.39/443,428.42
  6. Step 6: Final answer
    x = 334,203.59

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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.