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Finding the Fourth Proportional to 310,218.66, 428,101.98 and 174,252.66

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Solution

The fourth proportional to 310,218.66, 428,101.98 and 174,252.66 is: 240,468.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    310,218.66 : 428,101.98 = 174,252.66 : x
  2. Step 2: Convert to fraction form
    310,218.66/428,101.98 = 174,252.66/x
  3. Step 3: Cross multiply
    310,218.66x = 428,101.98 × 174,252.66
  4. Step 4: Simplify right side
    310,218.66x = 74,597,908,766.27
  5. Step 5: Solve for x
    x = 74,597,908,766.27/310,218.66
  6. Step 6: Final answer
    x = 240,468.80

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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.