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Finding the Fourth Proportional to 455,790.80, 683,719.45 and 156,268.85

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Solution

The fourth proportional to 455,790.80, 683,719.45 and 156,268.85 is: 234,414.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    455,790.80 : 683,719.45 = 156,268.85 : x
  2. Step 2: Convert to fraction form
    455,790.80/683,719.45 = 156,268.85/x
  3. Step 3: Cross multiply
    455,790.80x = 683,719.45 × 156,268.85
  4. Step 4: Simplify right side
    455,790.80x = 106,844,048,364.86
  5. Step 5: Solve for x
    x = 106,844,048,364.86/455,790.80
  6. Step 6: Final answer
    x = 234,414.67

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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.