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Finding the Fourth Proportional to 308,295.78, 425,502.32 and 179,274.18

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Solution

The fourth proportional to 308,295.78, 425,502.32 and 179,274.18 is: 247,429.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    308,295.78 : 425,502.32 = 179,274.18 : x
  2. Step 2: Convert to fraction form
    308,295.78/425,502.32 = 179,274.18/x
  3. Step 3: Cross multiply
    308,295.78x = 425,502.32 × 179,274.18
  4. Step 4: Simplify right side
    308,295.78x = 76,281,579,506.10
  5. Step 5: Solve for x
    x = 76,281,579,506.10/308,295.78
  6. Step 6: Final answer
    x = 247,429.85

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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.