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Finding the Fourth Proportional to 545,809.32, 818,343.36 and 190,629

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Solution

The fourth proportional to 545,809.32, 818,343.36 and 190,629 is: 285,814.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    545,809.32 : 818,343.36 = 190,629 : x
  2. Step 2: Convert to fraction form
    545,809.32/818,343.36 = 190,629/x
  3. Step 3: Cross multiply
    545,809.32x = 818,343.36 × 190,629
  4. Step 4: Simplify right side
    545,809.32x = 155,999,976,373.44
  5. Step 5: Solve for x
    x = 155,999,976,373.44/545,809.32
  6. Step 6: Final answer
    x = 285,814.06

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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.