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Finding the Fourth Proportional to 422,804.56, 583,388.16 and 250,690.72

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Solution

The fourth proportional to 422,804.56, 583,388.16 and 250,690.72 is: 345,904.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    422,804.56 : 583,388.16 = 250,690.72 : x
  2. Step 2: Convert to fraction form
    422,804.56/583,388.16 = 250,690.72/x
  3. Step 3: Cross multiply
    422,804.56x = 583,388.16 × 250,690.72
  4. Step 4: Simplify right side
    422,804.56x = 146,249,997,869.88
  5. Step 5: Solve for x
    x = 146,249,997,869.88/422,804.56
  6. Step 6: Final answer
    x = 345,904.50

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.