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Finding the Fourth Proportional to 272,482.56, 408,741.12 and 85,501.44

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Solution

The fourth proportional to 272,482.56, 408,741.12 and 85,501.44 is: 128,257.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    272,482.56 : 408,741.12 = 85,501.44 : x
  2. Step 2: Convert to fraction form
    272,482.56/408,741.12 = 85,501.44/x
  3. Step 3: Cross multiply
    272,482.56x = 408,741.12 × 85,501.44
  4. Step 4: Simplify right side
    272,482.56x = 34,947,954,347.21
  5. Step 5: Solve for x
    x = 34,947,954,347.21/272,482.56
  6. Step 6: Final answer
    x = 128,257.58

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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.