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Finding the Fourth Proportional to 247,720.51, 341,842.84 and 140,291.30

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Solution

The fourth proportional to 247,720.51, 341,842.84 and 140,291.30 is: 193,595.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    247,720.51 : 341,842.84 = 140,291.30 : x
  2. Step 2: Convert to fraction form
    247,720.51/341,842.84 = 140,291.30/x
  3. Step 3: Cross multiply
    247,720.51x = 341,842.84 × 140,291.30
  4. Step 4: Simplify right side
    247,720.51x = 47,957,576,419.29
  5. Step 5: Solve for x
    x = 47,957,576,419.29/247,720.51
  6. Step 6: Final answer
    x = 193,595.50

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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.