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Finding the Fourth Proportional to 405,104.40, 607,656.60 and 168,422.40

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Solution

The fourth proportional to 405,104.40, 607,656.60 and 168,422.40 is: 252,633.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    405,104.40 : 607,656.60 = 168,422.40 : x
  2. Step 2: Convert to fraction form
    405,104.40/607,656.60 = 168,422.40/x
  3. Step 3: Cross multiply
    405,104.40x = 607,656.60 × 168,422.40
  4. Step 4: Simplify right side
    405,104.40x = 102,342,982,947.84
  5. Step 5: Solve for x
    x = 102,342,982,947.84/405,104.40
  6. Step 6: Final answer
    x = 252,633.60

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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.