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Finding the Fourth Proportional to 308,560.95, 426,220.65 and 236,817.63

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Solution

The fourth proportional to 308,560.95, 426,220.65 and 236,817.63 is: 327,120.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    308,560.95 : 426,220.65 = 236,817.63 : x
  2. Step 2: Convert to fraction form
    308,560.95/426,220.65 = 236,817.63/x
  3. Step 3: Cross multiply
    308,560.95x = 426,220.65 × 236,817.63
  4. Step 4: Simplify right side
    308,560.95x = 100,936,564,190.06
  5. Step 5: Solve for x
    x = 100,936,564,190.06/308,560.95
  6. Step 6: Final answer
    x = 327,120.34

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Double scale
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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.