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Finding the Fourth Proportional to 439,230.40, 658,327.20 and 328,292.80

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Solution

The fourth proportional to 439,230.40, 658,327.20 and 328,292.80 is: 492,051.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    439,230.40 : 658,327.20 = 328,292.80 : x
  2. Step 2: Convert to fraction form
    439,230.40/658,327.20 = 328,292.80/x
  3. Step 3: Cross multiply
    439,230.40x = 658,327.20 × 328,292.80
  4. Step 4: Simplify right side
    439,230.40x = 216,124,079,804.16
  5. Step 5: Solve for x
    x = 216,124,079,804.16/439,230.40
  6. Step 6: Final answer
    x = 492,051.73

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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.