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Finding the Fourth Proportional to 445,495.43, 668,175.49 and 145,969.38

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Solution

The fourth proportional to 445,495.43, 668,175.49 and 145,969.38 is: 218,931.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    445,495.43 : 668,175.49 = 145,969.38 : x
  2. Step 2: Convert to fraction form
    445,495.43/668,175.49 = 145,969.38/x
  3. Step 3: Cross multiply
    445,495.43x = 668,175.49 × 145,969.38
  4. Step 4: Simplify right side
    445,495.43x = 97,533,160,530.89
  5. Step 5: Solve for x
    x = 97,533,160,530.89/445,495.43
  6. Step 6: Final answer
    x = 218,931.90

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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.