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Finding the Fourth Proportional to 254,111.53, 351,085.80 and 216,270.97

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Solution

The fourth proportional to 254,111.53, 351,085.80 and 216,270.97 is: 298,804.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    254,111.53 : 351,085.80 = 216,270.97 : x
  2. Step 2: Convert to fraction form
    254,111.53/351,085.80 = 216,270.97/x
  3. Step 3: Cross multiply
    254,111.53x = 351,085.80 × 216,270.97
  4. Step 4: Simplify right side
    254,111.53x = 75,929,666,519.23
  5. Step 5: Solve for x
    x = 75,929,666,519.23/254,111.53
  6. Step 6: Final answer
    x = 298,804.49

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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.