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Finding the Fourth Proportional to 421,008.41, 580,999.97 and 230,033.63

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Solution

The fourth proportional to 421,008.41, 580,999.97 and 230,033.63 is: 317,450.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    421,008.41 : 580,999.97 = 230,033.63 : x
  2. Step 2: Convert to fraction form
    421,008.41/580,999.97 = 230,033.63/x
  3. Step 3: Cross multiply
    421,008.41x = 580,999.97 × 230,033.63
  4. Step 4: Simplify right side
    421,008.41x = 133,649,532,128.99
  5. Step 5: Solve for x
    x = 133,649,532,128.99/421,008.41
  6. Step 6: Final answer
    x = 317,450.98

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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.