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Finding the Fourth Proportional to 308,740.40, 426,145.56 and 181,456.88

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Solution

The fourth proportional to 308,740.40, 426,145.56 and 181,456.88 is: 250,459.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    308,740.40 : 426,145.56 = 181,456.88 : x
  2. Step 2: Convert to fraction form
    308,740.40/426,145.56 = 181,456.88/x
  3. Step 3: Cross multiply
    308,740.40x = 426,145.56 × 181,456.88
  4. Step 4: Simplify right side
    308,740.40x = 77,327,043,743.45
  5. Step 5: Solve for x
    x = 77,327,043,743.45/308,740.40
  6. Step 6: Final answer
    x = 250,459.75

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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.