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Finding the Fourth Proportional to 455,605.90, 683,399.62 and 118,639.10

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Solution

The fourth proportional to 455,605.90, 683,399.62 and 118,639.10 is: 177,956.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    455,605.90 : 683,399.62 = 118,639.10 : x
  2. Step 2: Convert to fraction form
    455,605.90/683,399.62 = 118,639.10/x
  3. Step 3: Cross multiply
    455,605.90x = 683,399.62 × 118,639.10
  4. Step 4: Simplify right side
    455,605.90x = 81,077,915,857.14
  5. Step 5: Solve for x
    x = 81,077,915,857.14/455,605.90
  6. Step 6: Final answer
    x = 177,956.25

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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.