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Finding the Fourth Proportional to 279,430.51, 384,879.53 and 214,776.11

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Solution

The fourth proportional to 279,430.51, 384,879.53 and 214,776.11 is: 295,826.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,430.51 : 384,879.53 = 214,776.11 : x
  2. Step 2: Convert to fraction form
    279,430.51/384,879.53 = 214,776.11/x
  3. Step 3: Cross multiply
    279,430.51x = 384,879.53 × 214,776.11
  4. Step 4: Simplify right side
    279,430.51x = 82,662,926,884.57
  5. Step 5: Solve for x
    x = 82,662,926,884.57/279,430.51
  6. Step 6: Final answer
    x = 295,826.42

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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.