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Finding the Fourth Proportional to 496,861.60, 745,234.80 and 141,930.40

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Solution

The fourth proportional to 496,861.60, 745,234.80 and 141,930.40 is: 212,879.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    496,861.60 : 745,234.80 = 141,930.40 : x
  2. Step 2: Convert to fraction form
    496,861.60/745,234.80 = 141,930.40/x
  3. Step 3: Cross multiply
    496,861.60x = 745,234.80 × 141,930.40
  4. Step 4: Simplify right side
    496,861.60x = 105,771,473,257.92
  5. Step 5: Solve for x
    x = 105,771,473,257.92/496,861.60
  6. Step 6: Final answer
    x = 212,879.15

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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.