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Finding the Fourth Proportional to 455,082.75, 628,014.47 and 253,878.75

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Solution

The fourth proportional to 455,082.75, 628,014.47 and 253,878.75 is: 350,352.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    455,082.75 : 628,014.47 = 253,878.75 : x
  2. Step 2: Convert to fraction form
    455,082.75/628,014.47 = 253,878.75/x
  3. Step 3: Cross multiply
    455,082.75x = 628,014.47 × 253,878.75
  4. Step 4: Simplify right side
    455,082.75x = 159,439,527,356.12
  5. Step 5: Solve for x
    x = 159,439,527,356.12/455,082.75
  6. Step 6: Final answer
    x = 350,352.83

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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.