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Finding the Fourth Proportional to 308,589.88, 425,817.64 and 172,630.84

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Solution

The fourth proportional to 308,589.88, 425,817.64 and 172,630.84 is: 238,210.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    308,589.88 : 425,817.64 = 172,630.84 : x
  2. Step 2: Convert to fraction form
    308,589.88/425,817.64 = 172,630.84/x
  3. Step 3: Cross multiply
    308,589.88x = 425,817.64 × 172,630.84
  4. Step 4: Simplify right side
    308,589.88x = 73,509,256,880.02
  5. Step 5: Solve for x
    x = 73,509,256,880.02/308,589.88
  6. Step 6: Final answer
    x = 238,210.20

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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.