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Finding the Fourth Proportional to 247,218.49, 341,104.80 and 139,765.11

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Solution

The fourth proportional to 247,218.49, 341,104.80 and 139,765.11 is: 192,843.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    247,218.49 : 341,104.80 = 139,765.11 : x
  2. Step 2: Convert to fraction form
    247,218.49/341,104.80 = 139,765.11/x
  3. Step 3: Cross multiply
    247,218.49x = 341,104.80 × 139,765.11
  4. Step 4: Simplify right side
    247,218.49x = 47,674,549,893.53
  5. Step 5: Solve for x
    x = 47,674,549,893.53/247,218.49
  6. Step 6: Final answer
    x = 192,843.79

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1.5x scale

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.