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Finding the Fourth Proportional to 382,486.40, 573,729.60 and 242,403.20

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Solution

The fourth proportional to 382,486.40, 573,729.60 and 242,403.20 is: 363,604.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    382,486.40 : 573,729.60 = 242,403.20 : x
  2. Step 2: Convert to fraction form
    382,486.40/573,729.60 = 242,403.20/x
  3. Step 3: Cross multiply
    382,486.40x = 573,729.60 × 242,403.20
  4. Step 4: Simplify right side
    382,486.40x = 139,073,890,974.72
  5. Step 5: Solve for x
    x = 139,073,890,974.72/382,486.40
  6. Step 6: Final answer
    x = 363,604.80

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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.