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Finding the Fourth Proportional to 245,403.88, 338,667.06 and 143,495.08

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Solution

The fourth proportional to 245,403.88, 338,667.06 and 143,495.08 is: 198,028.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    245,403.88 : 338,667.06 = 143,495.08 : x
  2. Step 2: Convert to fraction form
    245,403.88/338,667.06 = 143,495.08/x
  3. Step 3: Cross multiply
    245,403.88x = 338,667.06 × 143,495.08
  4. Step 4: Simplify right side
    245,403.88x = 48,597,056,868.06
  5. Step 5: Solve for x
    x = 48,597,056,868.06/245,403.88
  6. Step 6: Final answer
    x = 198,028.89

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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.