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Finding the Fourth Proportional to 405,960.20, 608,940.30 and 125,563.40

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Solution

The fourth proportional to 405,960.20, 608,940.30 and 125,563.40 is: 188,345.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    405,960.20 : 608,940.30 = 125,563.40 : x
  2. Step 2: Convert to fraction form
    405,960.20/608,940.30 = 125,563.40/x
  3. Step 3: Cross multiply
    405,960.20x = 608,940.30 × 125,563.40
  4. Step 4: Simplify right side
    405,960.20x = 76,460,614,465.02
  5. Step 5: Solve for x
    x = 76,460,614,465.02/405,960.20
  6. Step 6: Final answer
    x = 188,345.10

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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.