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Finding the Fourth Proportional to 310,625.94, 428,560.74 and 253,166.52

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Solution

The fourth proportional to 310,625.94, 428,560.74 and 253,166.52 is: 349,285.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    310,625.94 : 428,560.74 = 253,166.52 : x
  2. Step 2: Convert to fraction form
    310,625.94/428,560.74 = 253,166.52/x
  3. Step 3: Cross multiply
    310,625.94x = 428,560.74 × 253,166.52
  4. Step 4: Simplify right side
    310,625.94x = 108,497,231,154.43
  5. Step 5: Solve for x
    x = 108,497,231,154.43/310,625.94
  6. Step 6: Final answer
    x = 349,285.80

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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.