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Finding the Fourth Proportional to 380,604.60, 525,240.66 and 208,520.04

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Solution

The fourth proportional to 380,604.60, 525,240.66 and 208,520.04 is: 287,761.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    380,604.60 : 525,240.66 = 208,520.04 : x
  2. Step 2: Convert to fraction form
    380,604.60/525,240.66 = 208,520.04/x
  3. Step 3: Cross multiply
    380,604.60x = 525,240.66 × 208,520.04
  4. Step 4: Simplify right side
    380,604.60x = 109,523,203,432.83
  5. Step 5: Solve for x
    x = 109,523,203,432.83/380,604.60
  6. Step 6: Final answer
    x = 287,761.11

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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.