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Finding the Fourth Proportional to 238,808.71, 329,558.16 and 129,915.42

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Solution

The fourth proportional to 238,808.71, 329,558.16 and 129,915.42 is: 179,284.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    238,808.71 : 329,558.16 = 129,915.42 : x
  2. Step 2: Convert to fraction form
    238,808.71/329,558.16 = 129,915.42/x
  3. Step 3: Cross multiply
    238,808.71x = 329,558.16 × 129,915.42
  4. Step 4: Simplify right side
    238,808.71x = 42,814,686,583.66
  5. Step 5: Solve for x
    x = 42,814,686,583.66/238,808.71
  6. Step 6: Final answer
    x = 179,284.44

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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.