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Finding the Fourth Proportional to 380,586.86, 525,209.81 and 208,510.92

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Solution

The fourth proportional to 380,586.86, 525,209.81 and 208,510.92 is: 287,745.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    380,586.86 : 525,209.81 = 208,510.92 : x
  2. Step 2: Convert to fraction form
    380,586.86/525,209.81 = 208,510.92/x
  3. Step 3: Cross multiply
    380,586.86x = 525,209.81 × 208,510.92
  4. Step 4: Simplify right side
    380,586.86x = 109,511,980,375.00
  5. Step 5: Solve for x
    x = 109,511,980,375.00/380,586.86
  6. Step 6: Final answer
    x = 287,745.04

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1.5x scale

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.