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Finding the Fourth Proportional to 205,415.60, 307,835.40 and 163,367.60

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Solution

The fourth proportional to 205,415.60, 307,835.40 and 163,367.60 is: 244,822.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    205,415.60 : 307,835.40 = 163,367.60 : x
  2. Step 2: Convert to fraction form
    205,415.60/307,835.40 = 163,367.60/x
  3. Step 3: Cross multiply
    205,415.60x = 307,835.40 × 163,367.60
  4. Step 4: Simplify right side
    205,415.60x = 50,290,330,493.04
  5. Step 5: Solve for x
    x = 50,290,330,493.04/205,415.60
  6. Step 6: Final answer
    x = 244,822.35

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.