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Finding the Fourth Proportional to 319,659.76, 479,489.88 and 109,299.28

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Solution

The fourth proportional to 319,659.76, 479,489.88 and 109,299.28 is: 163,949.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    319,659.76 : 479,489.88 = 109,299.28 : x
  2. Step 2: Convert to fraction form
    319,659.76/479,489.88 = 109,299.28/x
  3. Step 3: Cross multiply
    319,659.76x = 479,489.88 × 109,299.28
  4. Step 4: Simplify right side
    319,659.76x = 52,407,898,651.29
  5. Step 5: Solve for x
    x = 52,407,898,651.29/319,659.76
  6. Step 6: Final answer
    x = 163,949.00

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.