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Finding the Fourth Proportional to 371,388.51, 512,522.10 and 201,622.50

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Solution

The fourth proportional to 371,388.51, 512,522.10 and 201,622.50 is: 278,242.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    371,388.51 : 512,522.10 = 201,622.50 : x
  2. Step 2: Convert to fraction form
    371,388.51/512,522.10 = 201,622.50/x
  3. Step 3: Cross multiply
    371,388.51x = 512,522.10 × 201,622.50
  4. Step 4: Simplify right side
    371,388.51x = 103,335,987,107.25
  5. Step 5: Solve for x
    x = 103,335,987,107.25/371,388.51
  6. Step 6: Final answer
    x = 278,242.28

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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.