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Finding the Fourth Proportional to 345,903.57, 477,274.01 and 210,008.97

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Solution

The fourth proportional to 345,903.57, 477,274.01 and 210,008.97 is: 289,768.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    345,903.57 : 477,274.01 = 210,008.97 : x
  2. Step 2: Convert to fraction form
    345,903.57/477,274.01 = 210,008.97/x
  3. Step 3: Cross multiply
    345,903.57x = 477,274.01 × 210,008.97
  4. Step 4: Simplify right side
    345,903.57x = 100,231,823,247.87
  5. Step 5: Solve for x
    x = 100,231,823,247.87/345,903.57
  6. Step 6: Final answer
    x = 289,768.11

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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.