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Finding the Fourth Proportional to 455,358.69, 683,024.18 and 118,391.90

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Solution

The fourth proportional to 455,358.69, 683,024.18 and 118,391.90 is: 177,584.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    455,358.69 : 683,024.18 = 118,391.90 : x
  2. Step 2: Convert to fraction form
    455,358.69/683,024.18 = 118,391.90/x
  3. Step 3: Cross multiply
    455,358.69x = 683,024.18 × 118,391.90
  4. Step 4: Simplify right side
    455,358.69x = 80,864,526,409.06
  5. Step 5: Solve for x
    x = 80,864,526,409.06/455,358.69
  6. Step 6: Final answer
    x = 177,584.24

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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.