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Finding the Fourth Proportional to 455,015.75, 627,921.74 and 253,811.75

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Solution

The fourth proportional to 455,015.75, 627,921.74 and 253,811.75 is: 350,260.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    455,015.75 : 627,921.74 = 253,811.75 : x
  2. Step 2: Convert to fraction form
    455,015.75/627,921.74 = 253,811.75/x
  3. Step 3: Cross multiply
    455,015.75x = 627,921.74 × 253,811.75
  4. Step 4: Simplify right side
    455,015.75x = 159,373,914,423.39
  5. Step 5: Solve for x
    x = 159,373,914,423.39/455,015.75
  6. Step 6: Final answer
    x = 350,260.22

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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.