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Finding the Fourth Proportional to 268,708.12, 370,826.13 and 147,858.28

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Solution

The fourth proportional to 268,708.12, 370,826.13 and 147,858.28 is: 204,049.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    268,708.12 : 370,826.13 = 147,858.28 : x
  2. Step 2: Convert to fraction form
    268,708.12/370,826.13 = 147,858.28/x
  3. Step 3: Cross multiply
    268,708.12x = 370,826.13 × 147,858.28
  4. Step 4: Simplify right side
    268,708.12x = 54,829,713,388.26
  5. Step 5: Solve for x
    x = 54,829,713,388.26/268,708.12
  6. Step 6: Final answer
    x = 204,049.34

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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.