Home / 430,521.14-645,767.22-231,230.76

Finding the Fourth Proportional to 430,521.14, 645,767.22 and 231,230.76

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Solution

The fourth proportional to 430,521.14, 645,767.22 and 231,230.76 is: 346,838.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    430,521.14 : 645,767.22 = 231,230.76 : x
  2. Step 2: Convert to fraction form
    430,521.14/645,767.22 = 231,230.76/x
  3. Step 3: Cross multiply
    430,521.14x = 645,767.22 × 231,230.76
  4. Step 4: Simplify right side
    430,521.14x = 149,321,245,063.69
  5. Step 5: Solve for x
    x = 149,321,245,063.69/430,521.14
  6. Step 6: Final answer
    x = 346,838.36

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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.