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Finding the Fourth Proportional to 605,269.80, 907,642.02 and 205,803.30

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Solution

The fourth proportional to 605,269.80, 907,642.02 and 205,803.30 is: 308,615.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    605,269.80 : 907,642.02 = 205,803.30 : x
  2. Step 2: Convert to fraction form
    605,269.80/907,642.02 = 205,803.30/x
  3. Step 3: Cross multiply
    605,269.80x = 907,642.02 × 205,803.30
  4. Step 4: Simplify right side
    605,269.80x = 186,795,722,934.67
  5. Step 5: Solve for x
    x = 186,795,722,934.67/605,269.80
  6. Step 6: Final answer
    x = 308,615.63

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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.