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Finding the Fourth Proportional to 340,892.48, 470,447.64 and 189,990.56

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Solution

The fourth proportional to 340,892.48, 470,447.64 and 189,990.56 is: 262,195.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    340,892.48 : 470,447.64 = 189,990.56 : x
  2. Step 2: Convert to fraction form
    340,892.48/470,447.64 = 189,990.56/x
  3. Step 3: Cross multiply
    340,892.48x = 470,447.64 × 189,990.56
  4. Step 4: Simplify right side
    340,892.48x = 89,380,610,574.28
  5. Step 5: Solve for x
    x = 89,380,610,574.28/340,892.48
  6. Step 6: Final answer
    x = 262,195.90

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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.