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Finding the Fourth Proportional to 290,324.63, 435,549.15 and 100,791

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Solution

The fourth proportional to 290,324.63, 435,549.15 and 100,791 is: 151,208.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    290,324.63 : 435,549.15 = 100,791 : x
  2. Step 2: Convert to fraction form
    290,324.63/435,549.15 = 100,791/x
  3. Step 3: Cross multiply
    290,324.63x = 435,549.15 × 100,791
  4. Step 4: Simplify right side
    290,324.63x = 43,899,434,377.65
  5. Step 5: Solve for x
    x = 43,899,434,377.65/290,324.63
  6. Step 6: Final answer
    x = 151,208.10

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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.