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Finding the Fourth Proportional to 355,438.80, 533,449.80 and 343,774.80

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Solution

The fourth proportional to 355,438.80, 533,449.80 and 343,774.80 is: 515,944.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    355,438.80 : 533,449.80 = 343,774.80 : x
  2. Step 2: Convert to fraction form
    355,438.80/533,449.80 = 343,774.80/x
  3. Step 3: Cross multiply
    355,438.80x = 533,449.80 × 343,774.80
  4. Step 4: Simplify right side
    355,438.80x = 183,386,598,305.04
  5. Step 5: Solve for x
    x = 183,386,598,305.04/355,438.80
  6. Step 6: Final answer
    x = 515,944.23

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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.