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Finding the Fourth Proportional to 270,485.95, 405,765.84 and 112,677.50

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Solution

The fourth proportional to 270,485.95, 405,765.84 and 112,677.50 is: 169,031.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    270,485.95 : 405,765.84 = 112,677.50 : x
  2. Step 2: Convert to fraction form
    270,485.95/405,765.84 = 112,677.50/x
  3. Step 3: Cross multiply
    270,485.95x = 405,765.84 × 112,677.50
  4. Step 4: Simplify right side
    270,485.95x = 45,720,680,436.60
  5. Step 5: Solve for x
    x = 45,720,680,436.60/270,485.95
  6. Step 6: Final answer
    x = 169,031.63

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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.