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Finding the Fourth Proportional to 219,520, 302,940.84 and 118,918

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Solution

The fourth proportional to 219,520, 302,940.84 and 118,918 is: 164,108.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    219,520 : 302,940.84 = 118,918 : x
  2. Step 2: Convert to fraction form
    219,520/302,940.84 = 118,918/x
  3. Step 3: Cross multiply
    219,520x = 302,940.84 × 118,918
  4. Step 4: Simplify right side
    219,520x = 36,025,118,811.12
  5. Step 5: Solve for x
    x = 36,025,118,811.12/219,520
  6. Step 6: Final answer
    x = 164,108.60

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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.