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Finding the Fourth Proportional to 308,620.17, 425,660.40 and 265,670.28

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Solution

The fourth proportional to 308,620.17, 425,660.40 and 265,670.28 is: 366,422.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    308,620.17 : 425,660.40 = 265,670.28 : x
  2. Step 2: Convert to fraction form
    308,620.17/425,660.40 = 265,670.28/x
  3. Step 3: Cross multiply
    308,620.17x = 425,660.40 × 265,670.28
  4. Step 4: Simplify right side
    308,620.17x = 113,085,317,652.91
  5. Step 5: Solve for x
    x = 113,085,317,652.91/308,620.17
  6. Step 6: Final answer
    x = 366,422.32

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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.