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Finding the Fourth Proportional to 342,451.71, 472,715.82 and 306,579.44

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Solution

The fourth proportional to 342,451.71, 472,715.82 and 306,579.44 is: 423,198.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    342,451.71 : 472,715.82 = 306,579.44 : x
  2. Step 2: Convert to fraction form
    342,451.71/472,715.82 = 306,579.44/x
  3. Step 3: Cross multiply
    342,451.71x = 472,715.82 × 306,579.44
  4. Step 4: Simplify right side
    342,451.71x = 144,924,949,011.16
  5. Step 5: Solve for x
    x = 144,924,949,011.16/342,451.71
  6. Step 6: Final answer
    x = 423,198.21

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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.