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Finding the Fourth Proportional to 410,147.20, 614,644.80 and 326,051.20

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Solution

The fourth proportional to 410,147.20, 614,644.80 and 326,051.20 is: 488,618.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    410,147.20 : 614,644.80 = 326,051.20 : x
  2. Step 2: Convert to fraction form
    410,147.20/614,644.80 = 326,051.20/x
  3. Step 3: Cross multiply
    410,147.20x = 614,644.80 × 326,051.20
  4. Step 4: Simplify right side
    410,147.20x = 200,405,674,613.76
  5. Step 5: Solve for x
    x = 200,405,674,613.76/410,147.20
  6. Step 6: Final answer
    x = 488,618.90

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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.