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Finding the Fourth Proportional to 499,245.76, 749,055.66 and 259,209.88

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Solution

The fourth proportional to 499,245.76, 749,055.66 and 259,209.88 is: 388,911.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    499,245.76 : 749,055.66 = 259,209.88 : x
  2. Step 2: Convert to fraction form
    499,245.76/749,055.66 = 259,209.88/x
  3. Step 3: Cross multiply
    499,245.76x = 749,055.66 × 259,209.88
  4. Step 4: Simplify right side
    499,245.76x = 194,162,627,741.92
  5. Step 5: Solve for x
    x = 194,162,627,741.92/499,245.76
  6. Step 6: Final answer
    x = 388,911.92

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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.