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Finding the Fourth Proportional to 306,008.91, 422,283.87 and 170,039.34

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Solution

The fourth proportional to 306,008.91, 422,283.87 and 170,039.34 is: 234,649.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    306,008.91 : 422,283.87 = 170,039.34 : x
  2. Step 2: Convert to fraction form
    306,008.91/422,283.87 = 170,039.34/x
  3. Step 3: Cross multiply
    306,008.91x = 422,283.87 × 170,039.34
  4. Step 4: Simplify right side
    306,008.91x = 71,804,870,547.45
  5. Step 5: Solve for x
    x = 71,804,870,547.45/306,008.91
  6. Step 6: Final answer
    x = 234,649.61

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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.