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Finding the Fourth Proportional to 245,769.34, 339,125.07 and 138,333.01

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Solution

The fourth proportional to 245,769.34, 339,125.07 and 138,333.01 is: 190,878.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    245,769.34 : 339,125.07 = 138,333.01 : x
  2. Step 2: Convert to fraction form
    245,769.34/339,125.07 = 138,333.01/x
  3. Step 3: Cross multiply
    245,769.34x = 339,125.07 × 138,333.01
  4. Step 4: Simplify right side
    245,769.34x = 46,912,191,699.56
  5. Step 5: Solve for x
    x = 46,912,191,699.56/245,769.34
  6. Step 6: Final answer
    x = 190,878.94

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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.