Home / 320,440.80-480,085.20-153,861.60

Finding the Fourth Proportional to 320,440.80, 480,085.20 and 153,861.60

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Solution

The fourth proportional to 320,440.80, 480,085.20 and 153,861.60 is: 230,515.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    320,440.80 : 480,085.20 = 153,861.60 : x
  2. Step 2: Convert to fraction form
    320,440.80/480,085.20 = 153,861.60/x
  3. Step 3: Cross multiply
    320,440.80x = 480,085.20 × 153,861.60
  4. Step 4: Simplify right side
    320,440.80x = 73,866,677,008.32
  5. Step 5: Solve for x
    x = 73,866,677,008.32/320,440.80
  6. Step 6: Final answer
    x = 230,515.83

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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.