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Finding the Fourth Proportional to 303,393.45, 455,254.20 and 125,918.40

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Solution

The fourth proportional to 303,393.45, 455,254.20 and 125,918.40 is: 188,945.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    303,393.45 : 455,254.20 = 125,918.40 : x
  2. Step 2: Convert to fraction form
    303,393.45/455,254.20 = 125,918.40/x
  3. Step 3: Cross multiply
    303,393.45x = 455,254.20 × 125,918.40
  4. Step 4: Simplify right side
    303,393.45x = 57,324,880,457.28
  5. Step 5: Solve for x
    x = 57,324,880,457.28/303,393.45
  6. Step 6: Final answer
    x = 188,945.68

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1.5x scale

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.