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Finding the Fourth Proportional to 310,194.32, 428,064.36 and 176,049.68

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Solution

The fourth proportional to 310,194.32, 428,064.36 and 176,049.68 is: 242,946.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    310,194.32 : 428,064.36 = 176,049.68 : x
  2. Step 2: Convert to fraction form
    310,194.32/428,064.36 = 176,049.68/x
  3. Step 3: Cross multiply
    310,194.32x = 428,064.36 × 176,049.68
  4. Step 4: Simplify right side
    310,194.32x = 75,360,593,597.40
  5. Step 5: Solve for x
    x = 75,360,593,597.40/310,194.32
  6. Step 6: Final answer
    x = 242,946.40

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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.