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Finding the Fourth Proportional to 388,372.64, 535,954.32 and 227,258.63

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Solution

The fourth proportional to 388,372.64, 535,954.32 and 227,258.63 is: 313,616.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    388,372.64 : 535,954.32 = 227,258.63 : x
  2. Step 2: Convert to fraction form
    388,372.64/535,954.32 = 227,258.63/x
  3. Step 3: Cross multiply
    388,372.64x = 535,954.32 × 227,258.63
  4. Step 4: Simplify right side
    388,372.64x = 121,800,243,835.84
  5. Step 5: Solve for x
    x = 121,800,243,835.84/388,372.64
  6. Step 6: Final answer
    x = 313,616.95

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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.