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Finding the Fourth Proportional to 303,371.40, 455,931.90 and 264,880.20

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Solution

The fourth proportional to 303,371.40, 455,931.90 and 264,880.20 is: 398,084.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    303,371.40 : 455,931.90 = 264,880.20 : x
  2. Step 2: Convert to fraction form
    303,371.40/455,931.90 = 264,880.20/x
  3. Step 3: Cross multiply
    303,371.40x = 455,931.90 × 264,880.20
  4. Step 4: Simplify right side
    303,371.40x = 120,767,332,858.38
  5. Step 5: Solve for x
    x = 120,767,332,858.38/303,371.40
  6. Step 6: Final answer
    x = 398,084.11

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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.