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Finding the Fourth Proportional to 290,300.67, 435,478.41 and 112,821.30

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Solution

The fourth proportional to 290,300.67, 435,478.41 and 112,821.30 is: 169,242.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    290,300.67 : 435,478.41 = 112,821.30 : x
  2. Step 2: Convert to fraction form
    290,300.67/435,478.41 = 112,821.30/x
  3. Step 3: Cross multiply
    290,300.67x = 435,478.41 × 112,821.30
  4. Step 4: Simplify right side
    290,300.67x = 49,131,240,338.13
  5. Step 5: Solve for x
    x = 49,131,240,338.13/290,300.67
  6. Step 6: Final answer
    x = 169,242.60

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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.