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Finding the Fourth Proportional to 422,368.88, 582,869.05 and 252,603

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Solution

The fourth proportional to 422,368.88, 582,869.05 and 252,603 is: 348,592.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    422,368.88 : 582,869.05 = 252,603 : x
  2. Step 2: Convert to fraction form
    422,368.88/582,869.05 = 252,603/x
  3. Step 3: Cross multiply
    422,368.88x = 582,869.05 × 252,603
  4. Step 4: Simplify right side
    422,368.88x = 147,234,470,005.64
  5. Step 5: Solve for x
    x = 147,234,470,005.64/422,368.88
  6. Step 6: Final answer
    x = 348,592.14

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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.