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Finding the Fourth Proportional to 289,048.88, 398,887.45 and 161,749.07

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Solution

The fourth proportional to 289,048.88, 398,887.45 and 161,749.07 is: 223,213.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    289,048.88 : 398,887.45 = 161,749.07 : x
  2. Step 2: Convert to fraction form
    289,048.88/398,887.45 = 161,749.07/x
  3. Step 3: Cross multiply
    289,048.88x = 398,887.45 × 161,749.07
  4. Step 4: Simplify right side
    289,048.88x = 64,519,674,665.02
  5. Step 5: Solve for x
    x = 64,519,674,665.02/289,048.88
  6. Step 6: Final answer
    x = 223,213.72

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.