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Finding the Fourth Proportional to 247,448.52, 370,842.30 and 128,871.24

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Solution

The fourth proportional to 247,448.52, 370,842.30 and 128,871.24 is: 193,134.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    247,448.52 : 370,842.30 = 128,871.24 : x
  2. Step 2: Convert to fraction form
    247,448.52/370,842.30 = 128,871.24/x
  3. Step 3: Cross multiply
    247,448.52x = 370,842.30 × 128,871.24
  4. Step 4: Simplify right side
    247,448.52x = 47,790,907,045.45
  5. Step 5: Solve for x
    x = 47,790,907,045.45/247,448.52
  6. Step 6: Final answer
    x = 193,134.75

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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.