Home / 320,123.80-480,044.25-170,328.58

Finding the Fourth Proportional to 320,123.80, 480,044.25 and 170,328.58

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Solution

The fourth proportional to 320,123.80, 480,044.25 and 170,328.58 is: 255,417.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    320,123.80 : 480,044.25 = 170,328.58 : x
  2. Step 2: Convert to fraction form
    320,123.80/480,044.25 = 170,328.58/x
  3. Step 3: Cross multiply
    320,123.80x = 480,044.25 × 170,328.58
  4. Step 4: Simplify right side
    320,123.80x = 81,765,255,439.67
  5. Step 5: Solve for x
    x = 81,765,255,439.67/320,123.80
  6. Step 6: Final answer
    x = 255,417.61

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.