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Finding the Fourth Proportional to 203,485.96, 280,828.38 and 118,601.20

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Solution

The fourth proportional to 203,485.96, 280,828.38 and 118,601.20 is: 163,680.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    203,485.96 : 280,828.38 = 118,601.20 : x
  2. Step 2: Convert to fraction form
    203,485.96/280,828.38 = 118,601.20/x
  3. Step 3: Cross multiply
    203,485.96x = 280,828.38 × 118,601.20
  4. Step 4: Simplify right side
    203,485.96x = 33,306,582,862.06
  5. Step 5: Solve for x
    x = 33,306,582,862.06/203,485.96
  6. Step 6: Final answer
    x = 163,680.00

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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.