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Finding the Fourth Proportional to 405,883.22, 608,644.85 and 216,308.25

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Solution

The fourth proportional to 405,883.22, 608,644.85 and 216,308.25 is: 324,366.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    405,883.22 : 608,644.85 = 216,308.25 : x
  2. Step 2: Convert to fraction form
    405,883.22/608,644.85 = 216,308.25/x
  3. Step 3: Cross multiply
    405,883.22x = 608,644.85 × 216,308.25
  4. Step 4: Simplify right side
    405,883.22x = 131,654,901,293.47
  5. Step 5: Solve for x
    x = 131,654,901,293.47/405,883.22
  6. Step 6: Final answer
    x = 324,366.46

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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.