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Finding the Fourth Proportional to 383,287.61, 525,105.90 and 368,921.98

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Solution

The fourth proportional to 383,287.61, 525,105.90 and 368,921.98 is: 505,424.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    383,287.61 : 525,105.90 = 368,921.98 : x
  2. Step 2: Convert to fraction form
    383,287.61/525,105.90 = 368,921.98/x
  3. Step 3: Cross multiply
    383,287.61x = 525,105.90 × 368,921.98
  4. Step 4: Simplify right side
    383,287.61x = 193,723,108,774.43
  5. Step 5: Solve for x
    x = 193,723,108,774.43/383,287.61
  6. Step 6: Final answer
    x = 505,424.92

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Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.