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Finding the Fourth Proportional to 391,013.12, 586,799.40 and 166,530.80

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Solution

The fourth proportional to 391,013.12, 586,799.40 and 166,530.80 is: 249,915.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    391,013.12 : 586,799.40 = 166,530.80 : x
  2. Step 2: Convert to fraction form
    391,013.12/586,799.40 = 166,530.80/x
  3. Step 3: Cross multiply
    391,013.12x = 586,799.40 × 166,530.80
  4. Step 4: Simplify right side
    391,013.12x = 97,720,173,521.52
  5. Step 5: Solve for x
    x = 97,720,173,521.52/391,013.12
  6. Step 6: Final answer
    x = 249,915.33

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