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Finding the Fourth Proportional to 253,446.90, 349,755.81 and 137,160.15

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Solution

The fourth proportional to 253,446.90, 349,755.81 and 137,160.15 is: 189,280.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    253,446.90 : 349,755.81 = 137,160.15 : x
  2. Step 2: Convert to fraction form
    253,446.90/349,755.81 = 137,160.15/x
  3. Step 3: Cross multiply
    253,446.90x = 349,755.81 × 137,160.15
  4. Step 4: Simplify right side
    253,446.90x = 47,972,559,362.97
  5. Step 5: Solve for x
    x = 47,972,559,362.97/253,446.90
  6. Step 6: Final answer
    x = 189,280.51

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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.