Home / 289,186.47-399,077.19-161,862.03

Finding the Fourth Proportional to 289,186.47, 399,077.19 and 161,862.03

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Solution

The fourth proportional to 289,186.47, 399,077.19 and 161,862.03 is: 223,369.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    289,186.47 : 399,077.19 = 161,862.03 : x
  2. Step 2: Convert to fraction form
    289,186.47/399,077.19 = 161,862.03/x
  3. Step 3: Cross multiply
    289,186.47x = 399,077.19 × 161,862.03
  4. Step 4: Simplify right side
    289,186.47x = 64,595,444,100.10
  5. Step 5: Solve for x
    x = 64,595,444,100.10/289,186.47
  6. Step 6: Final answer
    x = 223,369.52

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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.