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Finding the Fourth Proportional to 355,529.80, 533,586.30 and 343,865.80

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Solution

The fourth proportional to 355,529.80, 533,586.30 and 343,865.80 is: 516,080.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    355,529.80 : 533,586.30 = 343,865.80 : x
  2. Step 2: Convert to fraction form
    355,529.80/533,586.30 = 343,865.80/x
  3. Step 3: Cross multiply
    355,529.80x = 533,586.30 × 343,865.80
  4. Step 4: Simplify right side
    355,529.80x = 183,482,079,918.54
  5. Step 5: Solve for x
    x = 183,482,079,918.54/355,529.80
  6. Step 6: Final answer
    x = 516,080.73

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.