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Finding the Fourth Proportional to 254,389.82, 351,085.79 and 145,504.15

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Solution

The fourth proportional to 254,389.82, 351,085.79 and 145,504.15 is: 200,811.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    254,389.82 : 351,085.79 = 145,504.15 : x
  2. Step 2: Convert to fraction form
    254,389.82/351,085.79 = 145,504.15/x
  3. Step 3: Cross multiply
    254,389.82x = 351,085.79 × 145,504.15
  4. Step 4: Simplify right side
    254,389.82x = 51,084,438,937.07
  5. Step 5: Solve for x
    x = 51,084,438,937.07/254,389.82
  6. Step 6: Final answer
    x = 200,811.65

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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.