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Finding the Fourth Proportional to 316,191, 436,485.87 and 201,623.22

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Solution

The fourth proportional to 316,191, 436,485.87 and 201,623.22 is: 278,330.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    316,191 : 436,485.87 = 201,623.22 : x
  2. Step 2: Convert to fraction form
    316,191/436,485.87 = 201,623.22/x
  3. Step 3: Cross multiply
    316,191x = 436,485.87 × 201,623.22
  4. Step 4: Simplify right side
    316,191x = 88,005,686,593.90
  5. Step 5: Solve for x
    x = 88,005,686,593.90/316,191
  6. Step 6: Final answer
    x = 278,330.78

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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.