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Finding the Fourth Proportional to 422,580.40, 633,870.60 and 265,116.40

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Solution

The fourth proportional to 422,580.40, 633,870.60 and 265,116.40 is: 397,674.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    422,580.40 : 633,870.60 = 265,116.40 : x
  2. Step 2: Convert to fraction form
    422,580.40/633,870.60 = 265,116.40/x
  3. Step 3: Cross multiply
    422,580.40x = 633,870.60 × 265,116.40
  4. Step 4: Simplify right side
    422,580.40x = 168,049,491,537.84
  5. Step 5: Solve for x
    x = 168,049,491,537.84/422,580.40
  6. Step 6: Final answer
    x = 397,674.60

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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.