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Finding the Fourth Proportional to 371,379, 512,503.38 and 201,613.08

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Solution

The fourth proportional to 371,379, 512,503.38 and 201,613.08 is: 278,226.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    371,379 : 512,503.38 = 201,613.08 : x
  2. Step 2: Convert to fraction form
    371,379/512,503.38 = 201,613.08/x
  3. Step 3: Cross multiply
    371,379x = 512,503.38 × 201,613.08
  4. Step 4: Simplify right side
    371,379x = 103,327,384,952.21
  5. Step 5: Solve for x
    x = 103,327,384,952.21/371,379
  6. Step 6: Final answer
    x = 278,226.25

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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.