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Finding the Fourth Proportional to 319,760.80, 441,258.24 and 176,520.40

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Solution

The fourth proportional to 319,760.80, 441,258.24 and 176,520.40 is: 243,591.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    319,760.80 : 441,258.24 = 176,520.40 : x
  2. Step 2: Convert to fraction form
    319,760.80/441,258.24 = 176,520.40/x
  3. Step 3: Cross multiply
    319,760.80x = 441,258.24 × 176,520.40
  4. Step 4: Simplify right side
    319,760.80x = 77,891,081,028.10
  5. Step 5: Solve for x
    x = 77,891,081,028.10/319,760.80
  6. Step 6: Final answer
    x = 243,591.71

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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.