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Finding the Fourth Proportional to 371,302.77, 512,309.97 and 210,157.80

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Solution

The fourth proportional to 371,302.77, 512,309.97 and 210,157.80 is: 289,968.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    371,302.77 : 512,309.97 = 210,157.80 : x
  2. Step 2: Convert to fraction form
    371,302.77/512,309.97 = 210,157.80/x
  3. Step 3: Cross multiply
    371,302.77x = 512,309.97 × 210,157.80
  4. Step 4: Simplify right side
    371,302.77x = 107,665,936,213.27
  5. Step 5: Solve for x
    x = 107,665,936,213.27/371,302.77
  6. Step 6: Final answer
    x = 289,968.04

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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.