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Finding the Fourth Proportional to 405,633.60, 608,968.80 and 216,244.80

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Solution

The fourth proportional to 405,633.60, 608,968.80 and 216,244.80 is: 324,643.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    405,633.60 : 608,968.80 = 216,244.80 : x
  2. Step 2: Convert to fraction form
    405,633.60/608,968.80 = 216,244.80/x
  3. Step 3: Cross multiply
    405,633.60x = 608,968.80 × 216,244.80
  4. Step 4: Simplify right side
    405,633.60x = 131,686,336,362.24
  5. Step 5: Solve for x
    x = 131,686,336,362.24/405,633.60
  6. Step 6: Final answer
    x = 324,643.56

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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.