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Finding the Third Proportional to 216,361 and 474,240

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Solution

The third proportional to 216,361 and 474,240 is: 1,039,482.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    216,361 : 474,240 = 474,240 : x
  2. Step 2: Convert to fraction form
    216,361/474,240 = 474,240/x
  3. Step 3: Cross multiply
    216,361x = 474,240 × 474,240
  4. Step 4: Simplify right side
    216,361x = 224,903,577,600
  5. Step 5: Solve for x
    x = 224,903,577,600/216,361
  6. Step 6: Final answer
    x = 1,039,482.98

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Why These Related Problems?

These problems maintain the same ratio (2.19) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.