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Finding the Fourth Proportional to 386,029.20, 579,562.20 and 246,406.80

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Solution

The fourth proportional to 386,029.20, 579,562.20 and 246,406.80 is: 369,941.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    386,029.20 : 579,562.20 = 246,406.80 : x
  2. Step 2: Convert to fraction form
    386,029.20/579,562.20 = 246,406.80/x
  3. Step 3: Cross multiply
    386,029.20x = 579,562.20 × 246,406.80
  4. Step 4: Simplify right side
    386,029.20x = 142,808,067,102.96
  5. Step 5: Solve for x
    x = 142,808,067,102.96/386,029.20
  6. Step 6: Final answer
    x = 369,941.10

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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.