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Finding the Fourth Proportional to 308,598.95, 425,849.43 and 172,606.64

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Solution

The fourth proportional to 308,598.95, 425,849.43 and 172,606.64 is: 238,187.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    308,598.95 : 425,849.43 = 172,606.64 : x
  2. Step 2: Convert to fraction form
    308,598.95/425,849.43 = 172,606.64/x
  3. Step 3: Cross multiply
    308,598.95x = 425,849.43 × 172,606.64
  4. Step 4: Simplify right side
    308,598.95x = 73,504,437,776.24
  5. Step 5: Solve for x
    x = 73,504,437,776.24/308,598.95
  6. Step 6: Final answer
    x = 238,187.58

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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.