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Finding the Fourth Proportional to 303,330.40, 455,870.40 and 264,839.20

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Solution

The fourth proportional to 303,330.40, 455,870.40 and 264,839.20 is: 398,022.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    303,330.40 : 455,870.40 = 264,839.20 : x
  2. Step 2: Convert to fraction form
    303,330.40/455,870.40 = 264,839.20/x
  3. Step 3: Cross multiply
    303,330.40x = 455,870.40 × 264,839.20
  4. Step 4: Simplify right side
    303,330.40x = 120,732,352,039.68
  5. Step 5: Solve for x
    x = 120,732,352,039.68/303,330.40
  6. Step 6: Final answer
    x = 398,022.59

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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.