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Finding the Fourth Proportional to 421,008.42, 580,999.96 and 230,033.64

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Solution

The fourth proportional to 421,008.42, 580,999.96 and 230,033.64 is: 317,450.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    421,008.42 : 580,999.96 = 230,033.64 : x
  2. Step 2: Convert to fraction form
    421,008.42/580,999.96 = 230,033.64/x
  3. Step 3: Cross multiply
    421,008.42x = 580,999.96 × 230,033.64
  4. Step 4: Simplify right side
    421,008.42x = 133,649,535,638.65
  5. Step 5: Solve for x
    x = 133,649,535,638.65/421,008.42
  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.