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Finding the Fourth Proportional to 371,215.50, 512,277.75 and 201,449.64

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Solution

The fourth proportional to 371,215.50, 512,277.75 and 201,449.64 is: 278,000.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    371,215.50 : 512,277.75 = 201,449.64 : x
  2. Step 2: Convert to fraction form
    371,215.50/512,277.75 = 201,449.64/x
  3. Step 3: Cross multiply
    371,215.50x = 512,277.75 × 201,449.64
  4. Step 4: Simplify right side
    371,215.50x = 103,198,168,317.51
  5. Step 5: Solve for x
    x = 103,198,168,317.51/371,215.50
  6. Step 6: Final answer
    x = 278,000.70

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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.