Home / 216,445.20-298,500.97-135,880.22

Finding the Fourth Proportional to 216,445.20, 298,500.97 and 135,880.22

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Solution

The fourth proportional to 216,445.20, 298,500.97 and 135,880.22 is: 187,393.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    216,445.20 : 298,500.97 = 135,880.22 : x
  2. Step 2: Convert to fraction form
    216,445.20/298,500.97 = 135,880.22/x
  3. Step 3: Cross multiply
    216,445.20x = 298,500.97 × 135,880.22
  4. Step 4: Simplify right side
    216,445.20x = 40,560,377,473.81
  5. Step 5: Solve for x
    x = 40,560,377,473.81/216,445.20
  6. Step 6: Final answer
    x = 187,393.29

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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.