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Finding the Fourth Proportional to 455,520.63, 683,210.87 and 151,920.12

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Solution

The fourth proportional to 455,520.63, 683,210.87 and 151,920.12 is: 227,856.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    455,520.63 : 683,210.87 = 151,920.12 : x
  2. Step 2: Convert to fraction form
    455,520.63/683,210.87 = 151,920.12/x
  3. Step 3: Cross multiply
    455,520.63x = 683,210.87 × 151,920.12
  4. Step 4: Simplify right side
    455,520.63x = 103,793,476,596.10
  5. Step 5: Solve for x
    x = 103,793,476,596.10/455,520.63
  6. Step 6: Final answer
    x = 227,856.81

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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.