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Finding the Fourth Proportional to 381,000.74, 570,379.98 and 254,326.78

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Solution

The fourth proportional to 381,000.74, 570,379.98 and 254,326.78 is: 380,741.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    381,000.74 : 570,379.98 = 254,326.78 : x
  2. Step 2: Convert to fraction form
    381,000.74/570,379.98 = 254,326.78/x
  3. Step 3: Cross multiply
    381,000.74x = 570,379.98 × 254,326.78
  4. Step 4: Simplify right side
    381,000.74x = 145,062,903,689.86
  5. Step 5: Solve for x
    x = 145,062,903,689.86/381,000.74
  6. Step 6: Final answer
    x = 380,741.79

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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.