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Finding the Fourth Proportional to 356,718.87, 492,276.06 and 203,777.30

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Solution

The fourth proportional to 356,718.87, 492,276.06 and 203,777.30 is: 281,214.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    356,718.87 : 492,276.06 = 203,777.30 : x
  2. Step 2: Convert to fraction form
    356,718.87/492,276.06 = 203,777.30/x
  3. Step 3: Cross multiply
    356,718.87x = 492,276.06 × 203,777.30
  4. Step 4: Simplify right side
    356,718.87x = 100,314,683,900.06
  5. Step 5: Solve for x
    x = 100,314,683,900.06/356,718.87
  6. Step 6: Final answer
    x = 281,214.96

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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.