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Finding the Fourth Proportional to 499,412.64, 749,222.64 and 166,980

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Solution

The fourth proportional to 499,412.64, 749,222.64 and 166,980 is: 250,504.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    499,412.64 : 749,222.64 = 166,980 : x
  2. Step 2: Convert to fraction form
    499,412.64/749,222.64 = 166,980/x
  3. Step 3: Cross multiply
    499,412.64x = 749,222.64 × 166,980
  4. Step 4: Simplify right side
    499,412.64x = 125,105,196,427.20
  5. Step 5: Solve for x
    x = 125,105,196,427.20/499,412.64
  6. Step 6: Final answer
    x = 250,504.67

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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.