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Finding the Fourth Proportional to 253,365.50, 349,770.99 and 145,914.78

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Solution

The fourth proportional to 253,365.50, 349,770.99 and 145,914.78 is: 201,435.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    253,365.50 : 349,770.99 = 145,914.78 : x
  2. Step 2: Convert to fraction form
    253,365.50/349,770.99 = 145,914.78/x
  3. Step 3: Cross multiply
    253,365.50x = 349,770.99 × 145,914.78
  4. Step 4: Simplify right side
    253,365.50x = 51,036,757,056.23
  5. Step 5: Solve for x
    x = 51,036,757,056.23/253,365.50
  6. Step 6: Final answer
    x = 201,435.31

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1.5x scale

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.