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Finding the Fourth Proportional to 272,234.40, 407,890.80 and 131,690.40

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Solution

The fourth proportional to 272,234.40, 407,890.80 and 131,690.40 is: 197,312.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    272,234.40 : 407,890.80 = 131,690.40 : x
  2. Step 2: Convert to fraction form
    272,234.40/407,890.80 = 131,690.40/x
  3. Step 3: Cross multiply
    272,234.40x = 407,890.80 × 131,690.40
  4. Step 4: Simplify right side
    272,234.40x = 53,715,302,608.32
  5. Step 5: Solve for x
    x = 53,715,302,608.32/272,234.40
  6. Step 6: Final answer
    x = 197,312.69

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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.