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Finding the Fourth Proportional to 253,399.80, 349,687.26 and 145,969.50

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Solution

The fourth proportional to 253,399.80, 349,687.26 and 145,969.50 is: 201,435.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    253,399.80 : 349,687.26 = 145,969.50 : x
  2. Step 2: Convert to fraction form
    253,399.80/349,687.26 = 145,969.50/x
  3. Step 3: Cross multiply
    253,399.80x = 349,687.26 × 145,969.50
  4. Step 4: Simplify right side
    253,399.80x = 51,043,674,498.57
  5. Step 5: Solve for x
    x = 51,043,674,498.57/253,399.80
  6. Step 6: Final answer
    x = 201,435.34

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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.