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Finding the Fourth Proportional to 349,808.20, 490,664.60 and 349,808.20

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Solution

The fourth proportional to 349,808.20, 490,664.60 and 349,808.20 is: 490,664.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    349,808.20 : 490,664.60 = 349,808.20 : x
  2. Step 2: Convert to fraction form
    349,808.20/490,664.60 = 349,808.20/x
  3. Step 3: Cross multiply
    349,808.20x = 490,664.60 × 349,808.20
  4. Step 4: Simplify right side
    349,808.20x = 171,638,500,529.72
  5. Step 5: Solve for x
    x = 171,638,500,529.72/349,808.20
  6. Step 6: Final answer
    x = 490,664.60

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.