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Finding the Fourth Proportional to 245,969.36, 338,723.04 and 213,689.24

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Solution

The fourth proportional to 245,969.36, 338,723.04 and 213,689.24 is: 294,270.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    245,969.36 : 338,723.04 = 213,689.24 : x
  2. Step 2: Convert to fraction form
    245,969.36/338,723.04 = 213,689.24/x
  3. Step 3: Cross multiply
    245,969.36x = 338,723.04 × 213,689.24
  4. Step 4: Simplify right side
    245,969.36x = 72,381,468,988.09
  5. Step 5: Solve for x
    x = 72,381,468,988.09/245,969.36
  6. Step 6: Final answer
    x = 294,270.27

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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.