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Finding the Fourth Proportional to 253,020.56, 349,429.83 and 218,865.07

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Solution

The fourth proportional to 253,020.56, 349,429.83 and 218,865.07 is: 302,259.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    253,020.56 : 349,429.83 = 218,865.07 : x
  2. Step 2: Convert to fraction form
    253,020.56/349,429.83 = 218,865.07/x
  3. Step 3: Cross multiply
    253,020.56x = 349,429.83 × 218,865.07
  4. Step 4: Simplify right side
    253,020.56x = 76,477,982,455.89
  5. Step 5: Solve for x
    x = 76,477,982,455.89/253,020.56
  6. Step 6: Final answer
    x = 302,259.95

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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.