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Finding the Fourth Proportional to 290,446.10, 435,038.24 and 140,371.65

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Solution

The fourth proportional to 290,446.10, 435,038.24 and 140,371.65 is: 210,252.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    290,446.10 : 435,038.24 = 140,371.65 : x
  2. Step 2: Convert to fraction form
    290,446.10/435,038.24 = 140,371.65/x
  3. Step 3: Cross multiply
    290,446.10x = 435,038.24 × 140,371.65
  4. Step 4: Simplify right side
    290,446.10x = 61,067,036,991.72
  5. Step 5: Solve for x
    x = 61,067,036,991.72/290,446.10
  6. Step 6: Final answer
    x = 210,252.56

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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.