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Finding the Fourth Proportional to 405,310.88, 607,751.26 and 202,685.34

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Solution

The fourth proportional to 405,310.88, 607,751.26 and 202,685.34 is: 303,920.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    405,310.88 : 607,751.26 = 202,685.34 : x
  2. Step 2: Convert to fraction form
    405,310.88/607,751.26 = 202,685.34/x
  3. Step 3: Cross multiply
    405,310.88x = 607,751.26 × 202,685.34
  4. Step 4: Simplify right side
    405,310.88x = 123,182,270,768.53
  5. Step 5: Solve for x
    x = 123,182,270,768.53/405,310.88
  6. Step 6: Final answer
    x = 303,920.46

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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.