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Finding the Fourth Proportional to 371,675.89, 512,909.90 and 201,911.23

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Solution

The fourth proportional to 371,675.89, 512,909.90 and 201,911.23 is: 278,635.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    371,675.89 : 512,909.90 = 201,911.23 : x
  2. Step 2: Convert to fraction form
    371,675.89/512,909.90 = 201,911.23/x
  3. Step 3: Cross multiply
    371,675.89x = 512,909.90 × 201,911.23
  4. Step 4: Simplify right side
    371,675.89x = 103,562,266,223.63
  5. Step 5: Solve for x
    x = 103,562,266,223.63/371,675.89
  6. Step 6: Final answer
    x = 278,635.96

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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.