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Finding the Fourth Proportional to 290,516.40, 435,929.40 and 113,029.20

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Solution

The fourth proportional to 290,516.40, 435,929.40 and 113,029.20 is: 169,604.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    290,516.40 : 435,929.40 = 113,029.20 : x
  2. Step 2: Convert to fraction form
    290,516.40/435,929.40 = 113,029.20/x
  3. Step 3: Cross multiply
    290,516.40x = 435,929.40 × 113,029.20
  4. Step 4: Simplify right side
    290,516.40x = 49,272,751,338.48
  5. Step 5: Solve for x
    x = 49,272,751,338.48/290,516.40
  6. Step 6: Final answer
    x = 169,604.03

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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.