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Finding the Fourth Proportional to 203,303.60, 280,567.92 and 112,659.32

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Solution

The fourth proportional to 203,303.60, 280,567.92 and 112,659.32 is: 155,474.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    203,303.60 : 280,567.92 = 112,659.32 : x
  2. Step 2: Convert to fraction form
    203,303.60/280,567.92 = 112,659.32/x
  3. Step 3: Cross multiply
    203,303.60x = 280,567.92 × 112,659.32
  4. Step 4: Simplify right side
    203,303.60x = 31,608,591,081.01
  5. Step 5: Solve for x
    x = 31,608,591,081.01/203,303.60
  6. Step 6: Final answer
    x = 155,474.82

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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.