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Finding the Fourth Proportional to 250,478.87, 345,713.00 and 230,303.79

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Solution

The fourth proportional to 250,478.87, 345,713.00 and 230,303.79 is: 317,867.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    250,478.87 : 345,713.00 = 230,303.79 : x
  2. Step 2: Convert to fraction form
    250,478.87/345,713.00 = 230,303.79/x
  3. Step 3: Cross multiply
    250,478.87x = 345,713.00 × 230,303.79
  4. Step 4: Simplify right side
    250,478.87x = 79,619,013,000.75
  5. Step 5: Solve for x
    x = 79,619,013,000.75/250,478.87
  6. Step 6: Final answer
    x = 317,867.19

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.