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Finding the Fourth Proportional to 379,843.40, 569,554.76 and 155,361.48

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Solution

The fourth proportional to 379,843.40, 569,554.76 and 155,361.48 is: 232,956.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    379,843.40 : 569,554.76 = 155,361.48 : x
  2. Step 2: Convert to fraction form
    379,843.40/569,554.76 = 155,361.48/x
  3. Step 3: Cross multiply
    379,843.40x = 569,554.76 × 155,361.48
  4. Step 4: Simplify right side
    379,843.40x = 88,486,869,677.84
  5. Step 5: Solve for x
    x = 88,486,869,677.84/379,843.40
  6. Step 6: Final answer
    x = 232,956.19

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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.