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Finding the Fourth Proportional to 628,675.88, 943,004.58 and 155,361.22

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Solution

The fourth proportional to 628,675.88, 943,004.58 and 155,361.22 is: 233,039.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    628,675.88 : 943,004.58 = 155,361.22 : x
  2. Step 2: Convert to fraction form
    628,675.88/943,004.58 = 155,361.22/x
  3. Step 3: Cross multiply
    628,675.88x = 943,004.58 × 155,361.22
  4. Step 4: Simplify right side
    628,675.88x = 146,506,342,014.39
  5. Step 5: Solve for x
    x = 146,506,342,014.39/628,675.88
  6. Step 6: Final answer
    x = 233,039.55

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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.