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Finding the Fourth Proportional to 308,145.38, 425,260.40 and 172,179.72

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Solution

The fourth proportional to 308,145.38, 425,260.40 and 172,179.72 is: 237,619.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    308,145.38 : 425,260.40 = 172,179.72 : x
  2. Step 2: Convert to fraction form
    308,145.38/425,260.40 = 172,179.72/x
  3. Step 3: Cross multiply
    308,145.38x = 425,260.40 × 172,179.72
  4. Step 4: Simplify right side
    308,145.38x = 73,221,215,738.19
  5. Step 5: Solve for x
    x = 73,221,215,738.19/308,145.38
  6. Step 6: Final answer
    x = 237,619.06

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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.