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Finding the Fourth Proportional to 306,276.84, 422,663.40 and 178,925.40

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Solution

The fourth proportional to 306,276.84, 422,663.40 and 178,925.40 is: 246,917.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    306,276.84 : 422,663.40 = 178,925.40 : x
  2. Step 2: Convert to fraction form
    306,276.84/422,663.40 = 178,925.40/x
  3. Step 3: Cross multiply
    306,276.84x = 422,663.40 × 178,925.40
  4. Step 4: Simplify right side
    306,276.84x = 75,625,217,910.36
  5. Step 5: Solve for x
    x = 75,625,217,910.36/306,276.84
  6. Step 6: Final answer
    x = 246,917.85

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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.