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Finding the Fourth Proportional to 345,126.84, 476,241.06 and 201,858.90

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Solution

The fourth proportional to 345,126.84, 476,241.06 and 201,858.90 is: 278,545.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    345,126.84 : 476,241.06 = 201,858.90 : x
  2. Step 2: Convert to fraction form
    345,126.84/476,241.06 = 201,858.90/x
  3. Step 3: Cross multiply
    345,126.84x = 476,241.06 × 201,858.90
  4. Step 4: Simplify right side
    345,126.84x = 96,133,496,506.43
  5. Step 5: Solve for x
    x = 96,133,496,506.43/345,126.84
  6. Step 6: Final answer
    x = 278,545.41

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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.