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Finding the Fourth Proportional to 442,900.40, 664,350.60 and 162,381.20

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Solution

The fourth proportional to 442,900.40, 664,350.60 and 162,381.20 is: 243,571.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    442,900.40 : 664,350.60 = 162,381.20 : x
  2. Step 2: Convert to fraction form
    442,900.40/664,350.60 = 162,381.20/x
  3. Step 3: Cross multiply
    442,900.40x = 664,350.60 × 162,381.20
  4. Step 4: Simplify right side
    442,900.40x = 107,878,047,648.72
  5. Step 5: Solve for x
    x = 107,878,047,648.72/442,900.40
  6. Step 6: Final answer
    x = 243,571.80

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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.