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Finding the Fourth Proportional to 421,487.01, 581,475.51 and 276,327.59

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Solution

The fourth proportional to 421,487.01, 581,475.51 and 276,327.59 is: 381,216.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    421,487.01 : 581,475.51 = 276,327.59 : x
  2. Step 2: Convert to fraction form
    421,487.01/581,475.51 = 276,327.59/x
  3. Step 3: Cross multiply
    421,487.01x = 581,475.51 × 276,327.59
  4. Step 4: Simplify right side
    421,487.01x = 160,677,723,414.94
  5. Step 5: Solve for x
    x = 160,677,723,414.94/421,487.01
  6. Step 6: Final answer
    x = 381,216.31

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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.