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Finding the Fourth Proportional to 548,162.88, 756,470.40 and 306,458.88

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Solution

The fourth proportional to 548,162.88, 756,470.40 and 306,458.88 is: 422,916.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    548,162.88 : 756,470.40 = 306,458.88 : x
  2. Step 2: Convert to fraction form
    548,162.88/756,470.40 = 306,458.88/x
  3. Step 3: Cross multiply
    548,162.88x = 756,470.40 × 306,458.88
  4. Step 4: Simplify right side
    548,162.88x = 231,827,071,537.15
  5. Step 5: Solve for x
    x = 231,827,071,537.15/548,162.88
  6. Step 6: Final answer
    x = 422,916.40

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1.5x scale

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.