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Finding the Fourth Proportional to 290,549.33, 435,849.05 and 80,187.27

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Solution

The fourth proportional to 290,549.33, 435,849.05 and 80,187.27 is: 120,287.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    290,549.33 : 435,849.05 = 80,187.27 : x
  2. Step 2: Convert to fraction form
    290,549.33/435,849.05 = 80,187.27/x
  3. Step 3: Cross multiply
    290,549.33x = 435,849.05 × 80,187.27
  4. Step 4: Simplify right side
    290,549.33x = 34,949,544,017.63
  5. Step 5: Solve for x
    x = 34,949,544,017.63/290,549.33
  6. Step 6: Final answer
    x = 120,287.82

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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.