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Finding the Fourth Proportional to 290,359.04, 435,540.72 and 80,008.52

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Solution

The fourth proportional to 290,359.04, 435,540.72 and 80,008.52 is: 120,013.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    290,359.04 : 435,540.72 = 80,008.52 : x
  2. Step 2: Convert to fraction form
    290,359.04/435,540.72 = 80,008.52/x
  3. Step 3: Cross multiply
    290,359.04x = 435,540.72 × 80,008.52
  4. Step 4: Simplify right side
    290,359.04x = 34,846,968,406.93
  5. Step 5: Solve for x
    x = 34,846,968,406.93/290,359.04
  6. Step 6: Final answer
    x = 120,013.38

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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.