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Finding the Fourth Proportional to 270,083.97, 405,126.14 and 70,403.85

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Solution

The fourth proportional to 270,083.97, 405,126.14 and 70,403.85 is: 105,605.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    270,083.97 : 405,126.14 = 70,403.85 : x
  2. Step 2: Convert to fraction form
    270,083.97/405,126.14 = 70,403.85/x
  3. Step 3: Cross multiply
    270,083.97x = 405,126.14 × 70,403.85
  4. Step 4: Simplify right side
    270,083.97x = 28,522,439,639.62
  5. Step 5: Solve for x
    x = 28,522,439,639.62/270,083.97
  6. Step 6: Final answer
    x = 105,605.82

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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.