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Finding the Fourth Proportional to 355,436.80, 533,446.80 and 343,772.80

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Solution

The fourth proportional to 355,436.80, 533,446.80 and 343,772.80 is: 515,941.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    355,436.80 : 533,446.80 = 343,772.80 : x
  2. Step 2: Convert to fraction form
    355,436.80/533,446.80 = 343,772.80/x
  3. Step 3: Cross multiply
    355,436.80x = 533,446.80 × 343,772.80
  4. Step 4: Simplify right side
    355,436.80x = 183,384,500,087.04
  5. Step 5: Solve for x
    x = 183,384,500,087.04/355,436.80
  6. Step 6: Final answer
    x = 515,941.23

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1.5x scale

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.