Home / 312,864.80-469,298.16-76,207.52

Finding the Fourth Proportional to 312,864.80, 469,298.16 and 76,207.52

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Solution

The fourth proportional to 312,864.80, 469,298.16 and 76,207.52 is: 114,311.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    312,864.80 : 469,298.16 = 76,207.52 : x
  2. Step 2: Convert to fraction form
    312,864.80/469,298.16 = 76,207.52/x
  3. Step 3: Cross multiply
    312,864.80x = 469,298.16 × 76,207.52
  4. Step 4: Simplify right side
    312,864.80x = 35,764,048,914.16
  5. Step 5: Solve for x
    x = 35,764,048,914.16/312,864.80
  6. Step 6: Final answer
    x = 114,311.51

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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.