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Finding the Fourth Proportional to 219,243.50, 302,556.30 and 118,641.50

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Solution

The fourth proportional to 219,243.50, 302,556.30 and 118,641.50 is: 163,725.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    219,243.50 : 302,556.30 = 118,641.50 : x
  2. Step 2: Convert to fraction form
    219,243.50/302,556.30 = 118,641.50/x
  3. Step 3: Cross multiply
    219,243.50x = 302,556.30 × 118,641.50
  4. Step 4: Simplify right side
    219,243.50x = 35,895,733,266.45
  5. Step 5: Solve for x
    x = 35,895,733,266.45/219,243.50
  6. Step 6: Final answer
    x = 163,725.42

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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.