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Finding the Fourth Proportional to 560,376.88, 773,304.72 and 305,728

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Solution

The fourth proportional to 560,376.88, 773,304.72 and 305,728 is: 421,896.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    560,376.88 : 773,304.72 = 305,728 : x
  2. Step 2: Convert to fraction form
    560,376.88/773,304.72 = 305,728/x
  3. Step 3: Cross multiply
    560,376.88x = 773,304.72 × 305,728
  4. Step 4: Simplify right side
    560,376.88x = 236,420,905,436.16
  5. Step 5: Solve for x
    x = 236,420,905,436.16/560,376.88
  6. Step 6: Final answer
    x = 421,896.25

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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.