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Finding the Fourth Proportional to 207,435, 311,254.10 and 74,325.52

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Solution

The fourth proportional to 207,435, 311,254.10 and 74,325.52 is: 111,524.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    207,435 : 311,254.10 = 74,325.52 : x
  2. Step 2: Convert to fraction form
    207,435/311,254.10 = 74,325.52/x
  3. Step 3: Cross multiply
    207,435x = 311,254.10 × 74,325.52
  4. Step 4: Simplify right side
    207,435x = 23,134,122,834.63
  5. Step 5: Solve for x
    x = 23,134,122,834.63/207,435
  6. Step 6: Final answer
    x = 111,524.68

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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.