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Finding the Fourth Proportional to 238,972.80, 358,588.80 and 98,745.60

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Solution

The fourth proportional to 238,972.80, 358,588.80 and 98,745.60 is: 148,171.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    238,972.80 : 358,588.80 = 98,745.60 : x
  2. Step 2: Convert to fraction form
    238,972.80/358,588.80 = 98,745.60/x
  3. Step 3: Cross multiply
    238,972.80x = 358,588.80 × 98,745.60
  4. Step 4: Simplify right side
    238,972.80x = 35,409,066,209.28
  5. Step 5: Solve for x
    x = 35,409,066,209.28/238,972.80
  6. Step 6: Final answer
    x = 148,171.95

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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.