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Finding the Fourth Proportional to 391,090.12, 586,914.96 and 166,607.80

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Solution

The fourth proportional to 391,090.12, 586,914.96 and 166,607.80 is: 250,030.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    391,090.12 : 586,914.96 = 166,607.80 : x
  2. Step 2: Convert to fraction form
    391,090.12/586,914.96 = 166,607.80/x
  3. Step 3: Cross multiply
    391,090.12x = 586,914.96 × 166,607.80
  4. Step 4: Simplify right side
    391,090.12x = 97,784,610,272.69
  5. Step 5: Solve for x
    x = 97,784,610,272.69/391,090.12
  6. Step 6: Final answer
    x = 250,030.89

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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.