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Finding the Fourth Proportional to 275,493.35, 380,190.34 and 152,987.79

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Solution

The fourth proportional to 275,493.35, 380,190.34 and 152,987.79 is: 211,128.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    275,493.35 : 380,190.34 = 152,987.79 : x
  2. Step 2: Convert to fraction form
    275,493.35/380,190.34 = 152,987.79/x
  3. Step 3: Cross multiply
    275,493.35x = 380,190.34 × 152,987.79
  4. Step 4: Simplify right side
    275,493.35x = 58,164,479,895.95
  5. Step 5: Solve for x
    x = 58,164,479,895.95/275,493.35
  6. Step 6: Final answer
    x = 211,128.44

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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.