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Finding the Fourth Proportional to 325,895.40, 487,676.70 and 297,901.80

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Solution

The fourth proportional to 325,895.40, 487,676.70 and 297,901.80 is: 445,786.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    325,895.40 : 487,676.70 = 297,901.80 : x
  2. Step 2: Convert to fraction form
    325,895.40/487,676.70 = 297,901.80/x
  3. Step 3: Cross multiply
    325,895.40x = 487,676.70 × 297,901.80
  4. Step 4: Simplify right side
    325,895.40x = 145,279,766,748.06
  5. Step 5: Solve for x
    x = 145,279,766,748.06/325,895.40
  6. Step 6: Final answer
    x = 445,786.49

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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.