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Finding the Fourth Proportional to 205,873.20, 308,809.80 and 203,904.90

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Solution

The fourth proportional to 205,873.20, 308,809.80 and 203,904.90 is: 305,857.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    205,873.20 : 308,809.80 = 203,904.90 : x
  2. Step 2: Convert to fraction form
    205,873.20/308,809.80 = 203,904.90/x
  3. Step 3: Cross multiply
    205,873.20x = 308,809.80 × 203,904.90
  4. Step 4: Simplify right side
    205,873.20x = 62,967,831,388.02
  5. Step 5: Solve for x
    x = 62,967,831,388.02/205,873.20
  6. Step 6: Final answer
    x = 305,857.35

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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.