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Finding the Fourth Proportional to 486,475.56, 671,158.98 and 285,232.68

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Solution

The fourth proportional to 486,475.56, 671,158.98 and 285,232.68 is: 393,517.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    486,475.56 : 671,158.98 = 285,232.68 : x
  2. Step 2: Convert to fraction form
    486,475.56/671,158.98 = 285,232.68/x
  3. Step 3: Cross multiply
    486,475.56x = 671,158.98 × 285,232.68
  4. Step 4: Simplify right side
    486,475.56x = 191,436,474,571.47
  5. Step 5: Solve for x
    x = 191,436,474,571.47/486,475.56
  6. Step 6: Final answer
    x = 393,517.15

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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.