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Finding the Fourth Proportional to 290,461.13, 435,765.62 and 170,619.43

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Solution

The fourth proportional to 290,461.13, 435,765.62 and 170,619.43 is: 255,972.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    290,461.13 : 435,765.62 = 170,619.43 : x
  2. Step 2: Convert to fraction form
    290,461.13/435,765.62 = 170,619.43/x
  3. Step 3: Cross multiply
    290,461.13x = 435,765.62 × 170,619.43
  4. Step 4: Simplify right side
    290,461.13x = 74,350,079,755.49
  5. Step 5: Solve for x
    x = 74,350,079,755.49/290,461.13
  6. Step 6: Final answer
    x = 255,972.56

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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.