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Finding the Fourth Proportional to 439,305.80, 606,234.78 and 245,718.02

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Solution

The fourth proportional to 439,305.80, 606,234.78 and 245,718.02 is: 339,086.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    439,305.80 : 606,234.78 = 245,718.02 : x
  2. Step 2: Convert to fraction form
    439,305.80/606,234.78 = 245,718.02/x
  3. Step 3: Cross multiply
    439,305.80x = 606,234.78 × 245,718.02
  4. Step 4: Simplify right side
    439,305.80x = 148,962,811,312.32
  5. Step 5: Solve for x
    x = 148,962,811,312.32/439,305.80
  6. Step 6: Final answer
    x = 339,086.83

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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.