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Finding the Fourth Proportional to 501,350.40, 691,858.80 and 274,996.80

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Solution

The fourth proportional to 501,350.40, 691,858.80 and 274,996.80 is: 379,492.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    501,350.40 : 691,858.80 = 274,996.80 : x
  2. Step 2: Convert to fraction form
    501,350.40/691,858.80 = 274,996.80/x
  3. Step 3: Cross multiply
    501,350.40x = 691,858.80 × 274,996.80
  4. Step 4: Simplify right side
    501,350.40x = 190,258,956,051.84
  5. Step 5: Solve for x
    x = 190,258,956,051.84/501,350.40
  6. Step 6: Final answer
    x = 379,492.98

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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.