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Finding the Fourth Proportional to 219,542.70, 302,968.80 and 118,940.70

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Solution

The fourth proportional to 219,542.70, 302,968.80 and 118,940.70 is: 164,138.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    219,542.70 : 302,968.80 = 118,940.70 : x
  2. Step 2: Convert to fraction form
    219,542.70/302,968.80 = 118,940.70/x
  3. Step 3: Cross multiply
    219,542.70x = 302,968.80 × 118,940.70
  4. Step 4: Simplify right side
    219,542.70x = 36,035,321,150.16
  5. Step 5: Solve for x
    x = 36,035,321,150.16/219,542.70
  6. Step 6: Final answer
    x = 164,138.10

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1.5x scale

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.