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Finding the Fourth Proportional to 308,127.45, 425,212.95 and 172,184.82

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Solution

The fourth proportional to 308,127.45, 425,212.95 and 172,184.82 is: 237,613.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    308,127.45 : 425,212.95 = 172,184.82 : x
  2. Step 2: Convert to fraction form
    308,127.45/425,212.95 = 172,184.82/x
  3. Step 3: Cross multiply
    308,127.45x = 425,212.95 × 172,184.82
  4. Step 4: Simplify right side
    308,127.45x = 73,215,215,257.42
  5. Step 5: Solve for x
    x = 73,215,215,257.42/308,127.45
  6. Step 6: Final answer
    x = 237,613.41

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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.