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Finding the Fourth Proportional to 421,277.56, 581,374.20 and 251,609.56

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Solution

The fourth proportional to 421,277.56, 581,374.20 and 251,609.56 is: 347,227.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    421,277.56 : 581,374.20 = 251,609.56 : x
  2. Step 2: Convert to fraction form
    421,277.56/581,374.20 = 251,609.56/x
  3. Step 3: Cross multiply
    421,277.56x = 581,374.20 × 251,609.56
  4. Step 4: Simplify right side
    421,277.56x = 146,279,306,657.35
  5. Step 5: Solve for x
    x = 146,279,306,657.35/421,277.56
  6. Step 6: Final answer
    x = 347,227.86

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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.