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Finding the Fourth Proportional to 397,335.54, 548,329.90 and 216,048.70

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Solution

The fourth proportional to 397,335.54, 548,329.90 and 216,048.70 is: 298,150.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    397,335.54 : 548,329.90 = 216,048.70 : x
  2. Step 2: Convert to fraction form
    397,335.54/548,329.90 = 216,048.70/x
  3. Step 3: Cross multiply
    397,335.54x = 548,329.90 × 216,048.70
  4. Step 4: Simplify right side
    397,335.54x = 118,465,962,066.13
  5. Step 5: Solve for x
    x = 118,465,962,066.13/397,335.54
  6. Step 6: Final answer
    x = 298,150.93

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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.