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Finding the Fourth Proportional to 545,910, 753,361.20 and 319,560.36

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Solution

The fourth proportional to 545,910, 753,361.20 and 319,560.36 is: 440,996.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    545,910 : 753,361.20 = 319,560.36 : x
  2. Step 2: Convert to fraction form
    545,910/753,361.20 = 319,560.36/x
  3. Step 3: Cross multiply
    545,910x = 753,361.20 × 319,560.36
  4. Step 4: Simplify right side
    545,910x = 240,744,376,282.03
  5. Step 5: Solve for x
    x = 240,744,376,282.03/545,910
  6. Step 6: Final answer
    x = 440,996.46

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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.