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Finding the Fourth Proportional to 275,379.75, 380,004.12 and 152,878.70

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Solution

The fourth proportional to 275,379.75, 380,004.12 and 152,878.70 is: 210,961.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    275,379.75 : 380,004.12 = 152,878.70 : x
  2. Step 2: Convert to fraction form
    275,379.75/380,004.12 = 152,878.70/x
  3. Step 3: Cross multiply
    275,379.75x = 380,004.12 × 152,878.70
  4. Step 4: Simplify right side
    275,379.75x = 58,094,536,810.25
  5. Step 5: Solve for x
    x = 58,094,536,810.25/275,379.75
  6. Step 6: Final answer
    x = 210,961.55

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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.