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Finding the Fourth Proportional to 308,464.66, 425,692.82 and 172,498.31

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Solution

The fourth proportional to 308,464.66, 425,692.82 and 172,498.31 is: 238,054.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    308,464.66 : 425,692.82 = 172,498.31 : x
  2. Step 2: Convert to fraction form
    308,464.66/425,692.82 = 172,498.31/x
  3. Step 3: Cross multiply
    308,464.66x = 425,692.82 × 172,498.31
  4. Step 4: Simplify right side
    308,464.66x = 73,431,290,957.96
  5. Step 5: Solve for x
    x = 73,431,290,957.96/308,464.66
  6. Step 6: Final answer
    x = 238,054.15

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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.