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Finding the Fourth Proportional to 308,963.20, 426,371.52 and 174,824.32

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Solution

The fourth proportional to 308,963.20, 426,371.52 and 174,824.32 is: 241,258.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    308,963.20 : 426,371.52 = 174,824.32 : x
  2. Step 2: Convert to fraction form
    308,963.20/426,371.52 = 174,824.32/x
  3. Step 3: Cross multiply
    308,963.20x = 426,371.52 × 174,824.32
  4. Step 4: Simplify right side
    308,963.20x = 74,540,111,051.37
  5. Step 5: Solve for x
    x = 74,540,111,051.37/308,963.20
  6. Step 6: Final answer
    x = 241,258.87

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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.