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Finding the Fourth Proportional to 482,771.14, 666,156.17 and 289,133.48

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Solution

The fourth proportional to 482,771.14, 666,156.17 and 289,133.48 is: 398,963.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    482,771.14 : 666,156.17 = 289,133.48 : x
  2. Step 2: Convert to fraction form
    482,771.14/666,156.17 = 289,133.48/x
  3. Step 3: Cross multiply
    482,771.14x = 666,156.17 × 289,133.48
  4. Step 4: Simplify right side
    482,771.14x = 192,608,046,879.12
  5. Step 5: Solve for x
    x = 192,608,046,879.12/482,771.14
  6. Step 6: Final answer
    x = 398,963.47

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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.