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Finding the Fourth Proportional to 253,446.98, 349,755.90 and 137,160.21

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Solution

The fourth proportional to 253,446.98, 349,755.90 and 137,160.21 is: 189,280.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    253,446.98 : 349,755.90 = 137,160.21 : x
  2. Step 2: Convert to fraction form
    253,446.98/349,755.90 = 137,160.21/x
  3. Step 3: Cross multiply
    253,446.98x = 349,755.90 × 137,160.21
  4. Step 4: Simplify right side
    253,446.98x = 47,972,591,895.51
  5. Step 5: Solve for x
    x = 47,972,591,895.51/253,446.98
  6. Step 6: Final answer
    x = 189,280.59

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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.