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Finding the Fourth Proportional to 371,399.72, 512,530.18 and 201,633.80

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Solution

The fourth proportional to 371,399.72, 512,530.18 and 201,633.80 is: 278,253.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    371,399.72 : 512,530.18 = 201,633.80 : x
  2. Step 2: Convert to fraction form
    371,399.72/512,530.18 = 201,633.80/x
  3. Step 3: Cross multiply
    371,399.72x = 512,530.18 × 201,633.80
  4. Step 4: Simplify right side
    371,399.72x = 103,343,404,741.35
  5. Step 5: Solve for x
    x = 103,343,404,741.35/371,399.72
  6. Step 6: Final answer
    x = 278,253.86

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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.