Home / 303,621.15-455,433.27-126,128.35

Finding the Fourth Proportional to 303,621.15, 455,433.27 and 126,128.35

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Solution

The fourth proportional to 303,621.15, 455,433.27 and 126,128.35 is: 189,193.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    303,621.15 : 455,433.27 = 126,128.35 : x
  2. Step 2: Convert to fraction form
    303,621.15/455,433.27 = 126,128.35/x
  3. Step 3: Cross multiply
    303,621.15x = 455,433.27 × 126,128.35
  4. Step 4: Simplify right side
    303,621.15x = 57,443,046,880.20
  5. Step 5: Solve for x
    x = 57,443,046,880.20/303,621.15
  6. Step 6: Final answer
    x = 189,193.17

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.