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Finding the Fourth Proportional to 405,972.60, 608,958.90 and 125,518.20

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Solution

The fourth proportional to 405,972.60, 608,958.90 and 125,518.20 is: 188,277.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    405,972.60 : 608,958.90 = 125,518.20 : x
  2. Step 2: Convert to fraction form
    405,972.60/608,958.90 = 125,518.20/x
  3. Step 3: Cross multiply
    405,972.60x = 608,958.90 × 125,518.20
  4. Step 4: Simplify right side
    405,972.60x = 76,435,425,001.98
  5. Step 5: Solve for x
    x = 76,435,425,001.98/405,972.60
  6. Step 6: Final answer
    x = 188,277.30

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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.