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Finding the Fourth Proportional to 404,762.60, 607,143.90 and 218,138.60

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Solution

The fourth proportional to 404,762.60, 607,143.90 and 218,138.60 is: 327,207.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    404,762.60 : 607,143.90 = 218,138.60 : x
  2. Step 2: Convert to fraction form
    404,762.60/607,143.90 = 218,138.60/x
  3. Step 3: Cross multiply
    404,762.60x = 607,143.90 × 218,138.60
  4. Step 4: Simplify right side
    404,762.60x = 132,441,520,344.54
  5. Step 5: Solve for x
    x = 132,441,520,344.54/404,762.60
  6. Step 6: Final answer
    x = 327,207.90

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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.