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Finding the Fourth Proportional to 379,539.46, 523,797.80 and 209,806.39

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Solution

The fourth proportional to 379,539.46, 523,797.80 and 209,806.39 is: 289,551.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    379,539.46 : 523,797.80 = 209,806.39 : x
  2. Step 2: Convert to fraction form
    379,539.46/523,797.80 = 209,806.39/x
  3. Step 3: Cross multiply
    379,539.46x = 523,797.80 × 209,806.39
  4. Step 4: Simplify right side
    379,539.46x = 109,896,125,507.94
  5. Step 5: Solve for x
    x = 109,896,125,507.94/379,539.46
  6. Step 6: Final answer
    x = 289,551.25

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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.