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Finding the Fourth Proportional to 245,938.91, 339,419.90 and 143,958.19

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Solution

The fourth proportional to 245,938.91, 339,419.90 and 143,958.19 is: 198,676.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    245,938.91 : 339,419.90 = 143,958.19 : x
  2. Step 2: Convert to fraction form
    245,938.91/339,419.90 = 143,958.19/x
  3. Step 3: Cross multiply
    245,938.91x = 339,419.90 × 143,958.19
  4. Step 4: Simplify right side
    245,938.91x = 48,862,274,601.74
  5. Step 5: Solve for x
    x = 48,862,274,601.74/245,938.91
  6. Step 6: Final answer
    x = 198,676.47

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.