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Finding the Fourth Proportional to 251,581.64, 377,295.60 and 71,681.72

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Solution

The fourth proportional to 251,581.64, 377,295.60 and 71,681.72 is: 107,500.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    251,581.64 : 377,295.60 = 71,681.72 : x
  2. Step 2: Convert to fraction form
    251,581.64/377,295.60 = 71,681.72/x
  3. Step 3: Cross multiply
    251,581.64x = 377,295.60 × 71,681.72
  4. Step 4: Simplify right side
    251,581.64x = 27,045,197,556.43
  5. Step 5: Solve for x
    x = 27,045,197,556.43/251,581.64
  6. Step 6: Final answer
    x = 107,500.68

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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.