Home / 330,416.80-455,976.32-187,203.36

Finding the Fourth Proportional to 330,416.80, 455,976.32 and 187,203.36

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Solution

The fourth proportional to 330,416.80, 455,976.32 and 187,203.36 is: 258,341.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    330,416.80 : 455,976.32 = 187,203.36 : x
  2. Step 2: Convert to fraction form
    330,416.80/455,976.32 = 187,203.36/x
  3. Step 3: Cross multiply
    330,416.80x = 455,976.32 × 187,203.36
  4. Step 4: Simplify right side
    330,416.80x = 85,360,299,184.44
  5. Step 5: Solve for x
    x = 85,360,299,184.44/330,416.80
  6. Step 6: Final answer
    x = 258,341.28

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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.