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Finding the Fourth Proportional to 445,496.43, 668,176.99 and 145,970.38

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Solution

The fourth proportional to 445,496.43, 668,176.99 and 145,970.38 is: 218,933.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    445,496.43 : 668,176.99 = 145,970.38 : x
  2. Step 2: Convert to fraction form
    445,496.43/668,176.99 = 145,970.38/x
  3. Step 3: Cross multiply
    445,496.43x = 668,176.99 × 145,970.38
  4. Step 4: Simplify right side
    445,496.43x = 97,534,049,137.56
  5. Step 5: Solve for x
    x = 97,534,049,137.56/445,496.43
  6. Step 6: Final answer
    x = 218,933.40

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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.