Home / 330,215.50-455,699.18-187,003.45

Finding the Fourth Proportional to 330,215.50, 455,699.18 and 187,003.45

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Solution

The fourth proportional to 330,215.50, 455,699.18 and 187,003.45 is: 258,065.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    330,215.50 : 455,699.18 = 187,003.45 : x
  2. Step 2: Convert to fraction form
    330,215.50/455,699.18 = 187,003.45/x
  3. Step 3: Cross multiply
    330,215.50x = 455,699.18 × 187,003.45
  4. Step 4: Simplify right side
    330,215.50x = 85,217,319,859.30
  5. Step 5: Solve for x
    x = 85,217,319,859.30/330,215.50
  6. Step 6: Final answer
    x = 258,065.78

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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.