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Finding the Fourth Proportional to 268,729.53, 370,804.37 and 153,986.10

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Solution

The fourth proportional to 268,729.53, 370,804.37 and 153,986.10 is: 212,476.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    268,729.53 : 370,804.37 = 153,986.10 : x
  2. Step 2: Convert to fraction form
    268,729.53/370,804.37 = 153,986.10/x
  3. Step 3: Cross multiply
    268,729.53x = 370,804.37 × 153,986.10
  4. Step 4: Simplify right side
    268,729.53x = 57,098,718,029.33
  5. Step 5: Solve for x
    x = 57,098,718,029.33/268,729.53
  6. Step 6: Final answer
    x = 212,476.53

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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.