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Finding the Fourth Proportional to 447,156.59, 670,661.97 and 131,539.70

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Solution

The fourth proportional to 447,156.59, 670,661.97 and 131,539.70 is: 197,288.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    447,156.59 : 670,661.97 = 131,539.70 : x
  2. Step 2: Convert to fraction form
    447,156.59/670,661.97 = 131,539.70/x
  3. Step 3: Cross multiply
    447,156.59x = 670,661.97 × 131,539.70
  4. Step 4: Simplify right side
    447,156.59x = 88,218,674,335.21
  5. Step 5: Solve for x
    x = 88,218,674,335.21/447,156.59
  6. Step 6: Final answer
    x = 197,288.10

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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.