Home / 405,741.40-608,984.10-206,200.60

Finding the Fourth Proportional to 405,741.40, 608,984.10 and 206,200.60

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Solution

The fourth proportional to 405,741.40, 608,984.10 and 206,200.60 is: 309,489.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    405,741.40 : 608,984.10 = 206,200.60 : x
  2. Step 2: Convert to fraction form
    405,741.40/608,984.10 = 206,200.60/x
  3. Step 3: Cross multiply
    405,741.40x = 608,984.10 × 206,200.60
  4. Step 4: Simplify right side
    405,741.40x = 125,572,886,810.46
  5. Step 5: Solve for x
    x = 125,572,886,810.46/405,741.40
  6. Step 6: Final answer
    x = 309,489.95

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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.