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Finding the Fourth Proportional to 382,640.40, 573,960.60 and 242,557.20

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Solution

The fourth proportional to 382,640.40, 573,960.60 and 242,557.20 is: 363,835.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    382,640.40 : 573,960.60 = 242,557.20 : x
  2. Step 2: Convert to fraction form
    382,640.40/573,960.60 = 242,557.20/x
  3. Step 3: Cross multiply
    382,640.40x = 573,960.60 × 242,557.20
  4. Step 4: Simplify right side
    382,640.40x = 139,218,276,046.32
  5. Step 5: Solve for x
    x = 139,218,276,046.32/382,640.40
  6. Step 6: Final answer
    x = 363,835.80

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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.