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Finding the Fourth Proportional to 290,517.40, 435,930.90 and 113,030.20

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Solution

The fourth proportional to 290,517.40, 435,930.90 and 113,030.20 is: 169,605.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    290,517.40 : 435,930.90 = 113,030.20 : x
  2. Step 2: Convert to fraction form
    290,517.40/435,930.90 = 113,030.20/x
  3. Step 3: Cross multiply
    290,517.40x = 435,930.90 × 113,030.20
  4. Step 4: Simplify right side
    290,517.40x = 49,273,356,813.18
  5. Step 5: Solve for x
    x = 49,273,356,813.18/290,517.40
  6. Step 6: Final answer
    x = 169,605.53

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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.