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Finding the Fourth Proportional to 383,653.85, 529,430.73 and 211,571.73

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Solution

The fourth proportional to 383,653.85, 529,430.73 and 211,571.73 is: 291,962.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    383,653.85 : 529,430.73 = 211,571.73 : x
  2. Step 2: Convert to fraction form
    383,653.85/529,430.73 = 211,571.73/x
  3. Step 3: Cross multiply
    383,653.85x = 529,430.73 × 211,571.73
  4. Step 4: Simplify right side
    383,653.85x = 112,012,575,461.26
  5. Step 5: Solve for x
    x = 112,012,575,461.26/383,653.85
  6. Step 6: Final answer
    x = 291,962.60

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.