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Finding the Fourth Proportional to 308,419.28, 425,814.60 and 236,663.12

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Solution

The fourth proportional to 308,419.28, 425,814.60 and 236,663.12 is: 326,745.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    308,419.28 : 425,814.60 = 236,663.12 : x
  2. Step 2: Convert to fraction form
    308,419.28/425,814.60 = 236,663.12/x
  3. Step 3: Cross multiply
    308,419.28x = 425,814.60 × 236,663.12
  4. Step 4: Simplify right side
    308,419.28x = 100,774,611,777.55
  5. Step 5: Solve for x
    x = 100,774,611,777.55/308,419.28
  6. Step 6: Final answer
    x = 326,745.50

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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.