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Finding the Fourth Proportional to 294,814, 406,842.96 and 160,678

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Solution

The fourth proportional to 294,814, 406,842.96 and 160,678 is: 221,735.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    294,814 : 406,842.96 = 160,678 : x
  2. Step 2: Convert to fraction form
    294,814/406,842.96 = 160,678/x
  3. Step 3: Cross multiply
    294,814x = 406,842.96 × 160,678
  4. Step 4: Simplify right side
    294,814x = 65,370,713,126.88
  5. Step 5: Solve for x
    x = 65,370,713,126.88/294,814
  6. Step 6: Final answer
    x = 221,735.44

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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.