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Finding the Fourth Proportional to 245,403.99, 368,302.86 and 127,109.16

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Solution

The fourth proportional to 245,403.99, 368,302.86 and 127,109.16 is: 190,765.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    245,403.99 : 368,302.86 = 127,109.16 : x
  2. Step 2: Convert to fraction form
    245,403.99/368,302.86 = 127,109.16/x
  3. Step 3: Cross multiply
    245,403.99x = 368,302.86 × 127,109.16
  4. Step 4: Simplify right side
    245,403.99x = 46,814,667,160.20
  5. Step 5: Solve for x
    x = 46,814,667,160.20/245,403.99
  6. Step 6: Final answer
    x = 190,765.71

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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.