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Finding the Fourth Proportional to 205,317.80, 307,458.30 and 163,845.80

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Solution

The fourth proportional to 205,317.80, 307,458.30 and 163,845.80 is: 245,355.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    205,317.80 : 307,458.30 = 163,845.80 : x
  2. Step 2: Convert to fraction form
    205,317.80/307,458.30 = 163,845.80/x
  3. Step 3: Cross multiply
    205,317.80x = 307,458.30 × 163,845.80
  4. Step 4: Simplify right side
    205,317.80x = 50,375,751,130.14
  5. Step 5: Solve for x
    x = 50,375,751,130.14/205,317.80
  6. Step 6: Final answer
    x = 245,355.01

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1.5x scale

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.