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Finding the Fourth Proportional to 245,291.28, 368,040.60 and 105,115.92

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Solution

The fourth proportional to 245,291.28, 368,040.60 and 105,115.92 is: 157,718.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    245,291.28 : 368,040.60 = 105,115.92 : x
  2. Step 2: Convert to fraction form
    245,291.28/368,040.60 = 105,115.92/x
  3. Step 3: Cross multiply
    245,291.28x = 368,040.60 × 105,115.92
  4. Step 4: Simplify right side
    245,291.28x = 38,686,926,266.35
  5. Step 5: Solve for x
    x = 38,686,926,266.35/245,291.28
  6. Step 6: Final answer
    x = 157,718.31

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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.