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Finding the Fourth Proportional to 308,319.41, 425,482.49 and 172,359.08

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Solution

The fourth proportional to 308,319.41, 425,482.49 and 172,359.08 is: 237,856.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    308,319.41 : 425,482.49 = 172,359.08 : x
  2. Step 2: Convert to fraction form
    308,319.41/425,482.49 = 172,359.08/x
  3. Step 3: Cross multiply
    308,319.41x = 425,482.49 × 172,359.08
  4. Step 4: Simplify right side
    308,319.41x = 73,335,770,532.51
  5. Step 5: Solve for x
    x = 73,335,770,532.51/308,319.41
  6. Step 6: Final answer
    x = 237,856.48

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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.