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Finding the Fourth Proportional to 308,474.68, 425,692.08 and 172,507.08

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Solution

The fourth proportional to 308,474.68, 425,692.08 and 172,507.08 is: 238,058.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    308,474.68 : 425,692.08 = 172,507.08 : x
  2. Step 2: Convert to fraction form
    308,474.68/425,692.08 = 172,507.08/x
  3. Step 3: Cross multiply
    308,474.68x = 425,692.08 × 172,507.08
  4. Step 4: Simplify right side
    308,474.68x = 73,434,897,699.93
  5. Step 5: Solve for x
    x = 73,434,897,699.93/308,474.68
  6. Step 6: Final answer
    x = 238,058.10

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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.