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Finding the Fourth Proportional to 308,282.81, 425,397.74 and 172,302.44

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Solution

The fourth proportional to 308,282.81, 425,397.74 and 172,302.44 is: 237,759.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    308,282.81 : 425,397.74 = 172,302.44 : x
  2. Step 2: Convert to fraction form
    308,282.81/425,397.74 = 172,302.44/x
  3. Step 3: Cross multiply
    308,282.81x = 425,397.74 × 172,302.44
  4. Step 4: Simplify right side
    308,282.81x = 73,297,065,583.98
  5. Step 5: Solve for x
    x = 73,297,065,583.98/308,282.81
  6. Step 6: Final answer
    x = 237,759.18

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.