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Finding the Fourth Proportional to 219,220.50, 302,524.56 and 118,618.50

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Solution

The fourth proportional to 219,220.50, 302,524.56 and 118,618.50 is: 163,693.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    219,220.50 : 302,524.56 = 118,618.50 : x
  2. Step 2: Convert to fraction form
    219,220.50/302,524.56 = 118,618.50/x
  3. Step 3: Cross multiply
    219,220.50x = 302,524.56 × 118,618.50
  4. Step 4: Simplify right side
    219,220.50x = 35,885,009,520.36
  5. Step 5: Solve for x
    x = 35,885,009,520.36/219,220.50
  6. Step 6: Final answer
    x = 163,693.68

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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.