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Finding the Fourth Proportional to 455,015.81, 627,921.82 and 253,811.81

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Solution

The fourth proportional to 455,015.81, 627,921.82 and 253,811.81 is: 350,260.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    455,015.81 : 627,921.82 = 253,811.81 : x
  2. Step 2: Convert to fraction form
    455,015.81/627,921.82 = 253,811.81/x
  3. Step 3: Cross multiply
    455,015.81x = 627,921.82 × 253,811.81
  4. Step 4: Simplify right side
    455,015.81x = 159,373,975,559.76
  5. Step 5: Solve for x
    x = 159,373,975,559.76/455,015.81
  6. Step 6: Final answer
    x = 350,260.30

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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.