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Finding the Fourth Proportional to 447,002.63, 670,503.94 and 131,459.54

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Solution

The fourth proportional to 447,002.63, 670,503.94 and 131,459.54 is: 197,189.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    447,002.63 : 670,503.94 = 131,459.54 : x
  2. Step 2: Convert to fraction form
    447,002.63/670,503.94 = 131,459.54/x
  3. Step 3: Cross multiply
    447,002.63x = 670,503.94 × 131,459.54
  4. Step 4: Simplify right side
    447,002.63x = 88,144,135,510.77
  5. Step 5: Solve for x
    x = 88,144,135,510.77/447,002.63
  6. Step 6: Final answer
    x = 197,189.30

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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.