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Finding the Fourth Proportional to 290,673.66, 435,604.53 and 140,874.19

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Solution

The fourth proportional to 290,673.66, 435,604.53 and 140,874.19 is: 211,114.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    290,673.66 : 435,604.53 = 140,874.19 : x
  2. Step 2: Convert to fraction form
    290,673.66/435,604.53 = 140,874.19/x
  3. Step 3: Cross multiply
    290,673.66x = 435,604.53 × 140,874.19
  4. Step 4: Simplify right side
    290,673.66x = 61,365,434,763.35
  5. Step 5: Solve for x
    x = 61,365,434,763.35/290,673.66
  6. Step 6: Final answer
    x = 211,114.53

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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.