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Finding the Fourth Proportional to 391,245.18, 586,335.33 and 166,322.94

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Solution

The fourth proportional to 391,245.18, 586,335.33 and 166,322.94 is: 249,258.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    391,245.18 : 586,335.33 = 166,322.94 : x
  2. Step 2: Convert to fraction form
    391,245.18/586,335.33 = 166,322.94/x
  3. Step 3: Cross multiply
    391,245.18x = 586,335.33 × 166,322.94
  4. Step 4: Simplify right side
    391,245.18x = 97,521,015,911.47
  5. Step 5: Solve for x
    x = 97,521,015,911.47/391,245.18
  6. Step 6: Final answer
    x = 249,258.06

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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.