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Finding the Fourth Proportional to 289,809, 399,860.73 and 167,271.39

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Solution

The fourth proportional to 289,809, 399,860.73 and 167,271.39 is: 230,790.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    289,809 : 399,860.73 = 167,271.39 : x
  2. Step 2: Convert to fraction form
    289,809/399,860.73 = 167,271.39/x
  3. Step 3: Cross multiply
    289,809x = 399,860.73 × 167,271.39
  4. Step 4: Simplify right side
    289,809x = 66,885,260,113.51
  5. Step 5: Solve for x
    x = 66,885,260,113.51/289,809
  6. Step 6: Final answer
    x = 230,790.83

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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.