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Finding the Fourth Proportional to 405,092.40, 607,638.60 and 168,410.40

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Solution

The fourth proportional to 405,092.40, 607,638.60 and 168,410.40 is: 252,615.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    405,092.40 : 607,638.60 = 168,410.40 : x
  2. Step 2: Convert to fraction form
    405,092.40/607,638.60 = 168,410.40/x
  3. Step 3: Cross multiply
    405,092.40x = 607,638.60 × 168,410.40
  4. Step 4: Simplify right side
    405,092.40x = 102,332,659,681.44
  5. Step 5: Solve for x
    x = 102,332,659,681.44/405,092.40
  6. Step 6: Final answer
    x = 252,615.60

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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.