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Finding the Fourth Proportional to 291,231.50, 401,820.90 and 170,402.46

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Solution

The fourth proportional to 291,231.50, 401,820.90 and 170,402.46 is: 235,109.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    291,231.50 : 401,820.90 = 170,402.46 : x
  2. Step 2: Convert to fraction form
    291,231.50/401,820.90 = 170,402.46/x
  3. Step 3: Cross multiply
    291,231.50x = 401,820.90 × 170,402.46
  4. Step 4: Simplify right side
    291,231.50x = 68,471,269,839.41
  5. Step 5: Solve for x
    x = 68,471,269,839.41/291,231.50
  6. Step 6: Final answer
    x = 235,109.42

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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.