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Finding the Fourth Proportional to 340,579, 470,013.60 and 189,676

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Solution

The fourth proportional to 340,579, 470,013.60 and 189,676 is: 261,761.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    340,579 : 470,013.60 = 189,676 : x
  2. Step 2: Convert to fraction form
    340,579/470,013.60 = 189,676/x
  3. Step 3: Cross multiply
    340,579x = 470,013.60 × 189,676
  4. Step 4: Simplify right side
    340,579x = 89,150,299,593.60
  5. Step 5: Solve for x
    x = 89,150,299,593.60/340,579
  6. Step 6: Final answer
    x = 261,761.00

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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.