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Finding the Fourth Proportional to 405,701.40, 608,552.10 and 206,052.60

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Solution

The fourth proportional to 405,701.40, 608,552.10 and 206,052.60 is: 309,078.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    405,701.40 : 608,552.10 = 206,052.60 : x
  2. Step 2: Convert to fraction form
    405,701.40/608,552.10 = 206,052.60/x
  3. Step 3: Cross multiply
    405,701.40x = 608,552.10 × 206,052.60
  4. Step 4: Simplify right side
    405,701.40x = 125,393,742,440.46
  5. Step 5: Solve for x
    x = 125,393,742,440.46/405,701.40
  6. Step 6: Final answer
    x = 309,078.90

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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.