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Finding the Fourth Proportional to 300,666.61, 451,148.12 and 140,753.39

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Solution

The fourth proportional to 300,666.61, 451,148.12 and 140,753.39 is: 211,199.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    300,666.61 : 451,148.12 = 140,753.39 : x
  2. Step 2: Convert to fraction form
    300,666.61/451,148.12 = 140,753.39/x
  3. Step 3: Cross multiply
    300,666.61x = 451,148.12 × 140,753.39
  4. Step 4: Simplify right side
    300,666.61x = 63,500,624,322.62
  5. Step 5: Solve for x
    x = 63,500,624,322.62/300,666.61
  6. Step 6: Final answer
    x = 211,199.46

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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.