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Finding the Fourth Proportional to 319,381.56, 479,116.08 and 108,963

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Solution

The fourth proportional to 319,381.56, 479,116.08 and 108,963 is: 163,459.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    319,381.56 : 479,116.08 = 108,963 : x
  2. Step 2: Convert to fraction form
    319,381.56/479,116.08 = 108,963/x
  3. Step 3: Cross multiply
    319,381.56x = 479,116.08 × 108,963
  4. Step 4: Simplify right side
    319,381.56x = 52,205,925,425.04
  5. Step 5: Solve for x
    x = 52,205,925,425.04/319,381.56
  6. Step 6: Final answer
    x = 163,459.42

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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.