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Finding the Fourth Proportional to 245,999.75, 339,495.23 and 142,655.09

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Solution

The fourth proportional to 245,999.75, 339,495.23 and 142,655.09 is: 196,873.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    245,999.75 : 339,495.23 = 142,655.09 : x
  2. Step 2: Convert to fraction form
    245,999.75/339,495.23 = 142,655.09/x
  3. Step 3: Cross multiply
    245,999.75x = 339,495.23 × 142,655.09
  4. Step 4: Simplify right side
    245,999.75x = 48,430,721,249.38
  5. Step 5: Solve for x
    x = 48,430,721,249.38/245,999.75
  6. Step 6: Final answer
    x = 196,873.05

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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.