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Finding the Fourth Proportional to 268,005.60, 401,662.80 and 162,712.80

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Solution

The fourth proportional to 268,005.60, 401,662.80 and 162,712.80 is: 243,859.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    268,005.60 : 401,662.80 = 162,712.80 : x
  2. Step 2: Convert to fraction form
    268,005.60/401,662.80 = 162,712.80/x
  3. Step 3: Cross multiply
    268,005.60x = 401,662.80 × 162,712.80
  4. Step 4: Simplify right side
    268,005.60x = 65,355,678,843.84
  5. Step 5: Solve for x
    x = 65,355,678,843.84/268,005.60
  6. Step 6: Final answer
    x = 243,859.38

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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.