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Finding the Fourth Proportional to 303,171.72, 454,755.74 and 78,531.56

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Solution

The fourth proportional to 303,171.72, 454,755.74 and 78,531.56 is: 117,796.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    303,171.72 : 454,755.74 = 78,531.56 : x
  2. Step 2: Convert to fraction form
    303,171.72/454,755.74 = 78,531.56/x
  3. Step 3: Cross multiply
    303,171.72x = 454,755.74 × 78,531.56
  4. Step 4: Simplify right side
    303,171.72x = 35,712,677,681.15
  5. Step 5: Solve for x
    x = 35,712,677,681.15/303,171.72
  6. Step 6: Final answer
    x = 117,796.86

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1.5x scale

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.