Home / 320,123.55-480,043.88-170,328.33

Finding the Fourth Proportional to 320,123.55, 480,043.88 and 170,328.33

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Solution

The fourth proportional to 320,123.55, 480,043.88 and 170,328.33 is: 255,417.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    320,123.55 : 480,043.88 = 170,328.33 : x
  2. Step 2: Convert to fraction form
    320,123.55/480,043.88 = 170,328.33/x
  3. Step 3: Cross multiply
    320,123.55x = 480,043.88 × 170,328.33
  4. Step 4: Simplify right side
    320,123.55x = 81,765,071,555.48
  5. Step 5: Solve for x
    x = 81,765,071,555.48/320,123.55
  6. Step 6: Final answer
    x = 255,417.23

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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.