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Finding the Fourth Proportional to 616,898.80, 925,348.20 and 279,809.20

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Solution

The fourth proportional to 616,898.80, 925,348.20 and 279,809.20 is: 419,713.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    616,898.80 : 925,348.20 = 279,809.20 : x
  2. Step 2: Convert to fraction form
    616,898.80/925,348.20 = 279,809.20/x
  3. Step 3: Cross multiply
    616,898.80x = 925,348.20 × 279,809.20
  4. Step 4: Simplify right side
    616,898.80x = 258,920,939,563.44
  5. Step 5: Solve for x
    x = 258,920,939,563.44/616,898.80
  6. Step 6: Final answer
    x = 419,713.80

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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.