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Finding the Fourth Proportional to 443,528.70, 665,163.45 and 159,186.30

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Solution

The fourth proportional to 443,528.70, 665,163.45 and 159,186.30 is: 238,732.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    443,528.70 : 665,163.45 = 159,186.30 : x
  2. Step 2: Convert to fraction form
    443,528.70/665,163.45 = 159,186.30/x
  3. Step 3: Cross multiply
    443,528.70x = 665,163.45 × 159,186.30
  4. Step 4: Simplify right side
    443,528.70x = 105,884,908,500.74
  5. Step 5: Solve for x
    x = 105,884,908,500.74/443,528.70
  6. Step 6: Final answer
    x = 238,732.94

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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.