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Finding the Fourth Proportional to 455,358.60, 683,232.30 and 218,579.40

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Solution

The fourth proportional to 455,358.60, 683,232.30 and 218,579.40 is: 327,962.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    455,358.60 : 683,232.30 = 218,579.40 : x
  2. Step 2: Convert to fraction form
    455,358.60/683,232.30 = 218,579.40/x
  3. Step 3: Cross multiply
    455,358.60x = 683,232.30 × 218,579.40
  4. Step 4: Simplify right side
    455,358.60x = 149,340,506,194.62
  5. Step 5: Solve for x
    x = 149,340,506,194.62/455,358.60
  6. Step 6: Final answer
    x = 327,962.42

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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.