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Finding the Fourth Proportional to 665,121.03, 997,471.33 and 238,647.32

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Solution

The fourth proportional to 665,121.03, 997,471.33 and 238,647.32 is: 357,895.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    665,121.03 : 997,471.33 = 238,647.32 : x
  2. Step 2: Convert to fraction form
    665,121.03/997,471.33 = 238,647.32/x
  3. Step 3: Cross multiply
    665,121.03x = 997,471.33 × 238,647.32
  4. Step 4: Simplify right side
    665,121.03x = 238,043,860,643.27
  5. Step 5: Solve for x
    x = 238,043,860,643.27/665,121.03
  6. Step 6: Final answer
    x = 357,895.56

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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.