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Finding the Fourth Proportional to 339,332.49, 511,382.03 and 305,640.72

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Solution

The fourth proportional to 339,332.49, 511,382.03 and 305,640.72 is: 460,607.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    339,332.49 : 511,382.03 = 305,640.72 : x
  2. Step 2: Convert to fraction form
    339,332.49/511,382.03 = 305,640.72/x
  3. Step 3: Cross multiply
    339,332.49x = 511,382.03 × 305,640.72
  4. Step 4: Simplify right side
    339,332.49x = 156,299,170,316.06
  5. Step 5: Solve for x
    x = 156,299,170,316.06/339,332.49
  6. Step 6: Final answer
    x = 460,607.74

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.