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Finding the Fourth Proportional to 306,596.71, 423,103.49 and 172,460.71

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Solution

The fourth proportional to 306,596.71, 423,103.49 and 172,460.71 is: 237,995.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    306,596.71 : 423,103.49 = 172,460.71 : x
  2. Step 2: Convert to fraction form
    306,596.71/423,103.49 = 172,460.71/x
  3. Step 3: Cross multiply
    306,596.71x = 423,103.49 × 172,460.71
  4. Step 4: Simplify right side
    306,596.71x = 72,968,728,288.88
  5. Step 5: Solve for x
    x = 72,968,728,288.88/306,596.71
  6. Step 6: Final answer
    x = 237,995.80

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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.