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Finding the Fourth Proportional to 400,718.40, 600,123.55 and 231,882.81

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Solution

The fourth proportional to 400,718.40, 600,123.55 and 231,882.81 is: 347,272.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    400,718.40 : 600,123.55 = 231,882.81 : x
  2. Step 2: Convert to fraction form
    400,718.40/600,123.55 = 231,882.81/x
  3. Step 3: Cross multiply
    400,718.40x = 600,123.55 × 231,882.81
  4. Step 4: Simplify right side
    400,718.40x = 139,158,335,121.18
  5. Step 5: Solve for x
    x = 139,158,335,121.18/400,718.40
  6. Step 6: Final answer
    x = 347,272.14

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.