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Finding the Fourth Proportional to 219,217.50, 302,520.15 and 118,615.50

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Solution

The fourth proportional to 219,217.50, 302,520.15 and 118,615.50 is: 163,689.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    219,217.50 : 302,520.15 = 118,615.50 : x
  2. Step 2: Convert to fraction form
    219,217.50/302,520.15 = 118,615.50/x
  3. Step 3: Cross multiply
    219,217.50x = 302,520.15 × 118,615.50
  4. Step 4: Simplify right side
    219,217.50x = 35,883,578,852.33
  5. Step 5: Solve for x
    x = 35,883,578,852.33/219,217.50
  6. Step 6: Final answer
    x = 163,689.39

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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.