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Finding the Fourth Proportional to 421,825.36, 582,129.03 and 240,554.65

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Solution

The fourth proportional to 421,825.36, 582,129.03 and 240,554.65 is: 331,971.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    421,825.36 : 582,129.03 = 240,554.65 : x
  2. Step 2: Convert to fraction form
    421,825.36/582,129.03 = 240,554.65/x
  3. Step 3: Cross multiply
    421,825.36x = 582,129.03 × 240,554.65
  4. Step 4: Simplify right side
    421,825.36x = 140,033,845,066.49
  5. Step 5: Solve for x
    x = 140,033,845,066.49/421,825.36
  6. Step 6: Final answer
    x = 331,971.14

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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.