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Finding the Fourth Proportional to 289,568.21, 399,603.86 and 162,244.72

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Solution

The fourth proportional to 289,568.21, 399,603.86 and 162,244.72 is: 223,897.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    289,568.21 : 399,603.86 = 162,244.72 : x
  2. Step 2: Convert to fraction form
    289,568.21/399,603.86 = 162,244.72/x
  3. Step 3: Cross multiply
    289,568.21x = 399,603.86 × 162,244.72
  4. Step 4: Simplify right side
    289,568.21x = 64,833,614,378.60
  5. Step 5: Solve for x
    x = 64,833,614,378.60/289,568.21
  6. Step 6: Final answer
    x = 223,897.56

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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.