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Finding the Fourth Proportional to 492,989.72, 680,325.87 and 266,635.22

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Solution

The fourth proportional to 492,989.72, 680,325.87 and 266,635.22 is: 367,956.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    492,989.72 : 680,325.87 = 266,635.22 : x
  2. Step 2: Convert to fraction form
    492,989.72/680,325.87 = 266,635.22/x
  3. Step 3: Cross multiply
    492,989.72x = 680,325.87 × 266,635.22
  4. Step 4: Simplify right side
    492,989.72x = 181,398,834,617.51
  5. Step 5: Solve for x
    x = 181,398,834,617.51/492,989.72
  6. Step 6: Final answer
    x = 367,956.63

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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.