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Finding the Fourth Proportional to 308,035.68, 425,087.43 and 172,069.21

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Solution

The fourth proportional to 308,035.68, 425,087.43 and 172,069.21 is: 237,454.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    308,035.68 : 425,087.43 = 172,069.21 : x
  2. Step 2: Convert to fraction form
    308,035.68/425,087.43 = 172,069.21/x
  3. Step 3: Cross multiply
    308,035.68x = 425,087.43 × 172,069.21
  4. Step 4: Simplify right side
    308,035.68x = 73,144,458,261.03
  5. Step 5: Solve for x
    x = 73,144,458,261.03/308,035.68
  6. Step 6: Final answer
    x = 237,454.50

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1.5x scale

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.