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Finding the Fourth Proportional to 538,487.04, 743,147.22 and 309,118.62

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Solution

The fourth proportional to 538,487.04, 743,147.22 and 309,118.62 is: 426,603.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    538,487.04 : 743,147.22 = 309,118.62 : x
  2. Step 2: Convert to fraction form
    538,487.04/743,147.22 = 309,118.62/x
  3. Step 3: Cross multiply
    538,487.04x = 743,147.22 × 309,118.62
  4. Step 4: Simplify right side
    538,487.04x = 229,720,643,103.24
  5. Step 5: Solve for x
    x = 229,720,643,103.24/538,487.04
  6. Step 6: Final answer
    x = 426,603.85

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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.