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Finding the Fourth Proportional to 270,084.97, 405,127.64 and 70,404.85

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Solution

The fourth proportional to 270,084.97, 405,127.64 and 70,404.85 is: 105,607.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    270,084.97 : 405,127.64 = 70,404.85 : x
  2. Step 2: Convert to fraction form
    270,084.97/405,127.64 = 70,404.85/x
  3. Step 3: Cross multiply
    270,084.97x = 405,127.64 × 70,404.85
  4. Step 4: Simplify right side
    270,084.97x = 28,522,950,725.05
  5. Step 5: Solve for x
    x = 28,522,950,725.05/270,084.97
  6. Step 6: Final answer
    x = 105,607.32

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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.