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Finding the Fourth Proportional to 405,144.80, 607,231.20 and 168,365.60

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Solution

The fourth proportional to 405,144.80, 607,231.20 and 168,365.60 is: 252,346.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    405,144.80 : 607,231.20 = 168,365.60 : x
  2. Step 2: Convert to fraction form
    405,144.80/607,231.20 = 168,365.60/x
  3. Step 3: Cross multiply
    405,144.80x = 607,231.20 × 168,365.60
  4. Step 4: Simplify right side
    405,144.80x = 102,236,845,326.72
  5. Step 5: Solve for x
    x = 102,236,845,326.72/405,144.80
  6. Step 6: Final answer
    x = 252,346.43

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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.