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Finding the Fourth Proportional to 405,109.80, 606,498.30 and 363,119.40

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Solution

The fourth proportional to 405,109.80, 606,498.30 and 363,119.40 is: 543,633.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    405,109.80 : 606,498.30 = 363,119.40 : x
  2. Step 2: Convert to fraction form
    405,109.80/606,498.30 = 363,119.40/x
  3. Step 3: Cross multiply
    405,109.80x = 606,498.30 × 363,119.40
  4. Step 4: Simplify right side
    405,109.80x = 220,231,298,797.02
  5. Step 5: Solve for x
    x = 220,231,298,797.02/405,109.80
  6. Step 6: Final answer
    x = 543,633.60

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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.