Home / 330,379.57-455,909.20-187,136.74

Finding the Fourth Proportional to 330,379.57, 455,909.20 and 187,136.74

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Solution

The fourth proportional to 330,379.57, 455,909.20 and 187,136.74 is: 258,240.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    330,379.57 : 455,909.20 = 187,136.74 : x
  2. Step 2: Convert to fraction form
    330,379.57/455,909.20 = 187,136.74/x
  3. Step 3: Cross multiply
    330,379.57x = 455,909.20 × 187,136.74
  4. Step 4: Simplify right side
    330,379.57x = 85,317,361,424.01
  5. Step 5: Solve for x
    x = 85,317,361,424.01/330,379.57
  6. Step 6: Final answer
    x = 258,240.43

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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.