Home / 427,619.91-641,416.64-203,141.91

Finding the Fourth Proportional to 427,619.91, 641,416.64 and 203,141.91

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Solution

The fourth proportional to 427,619.91, 641,416.64 and 203,141.91 is: 304,706.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    427,619.91 : 641,416.64 = 203,141.91 : x
  2. Step 2: Convert to fraction form
    427,619.91/641,416.64 = 203,141.91/x
  3. Step 3: Cross multiply
    427,619.91x = 641,416.64 × 203,141.91
  4. Step 4: Simplify right side
    427,619.91x = 130,298,600,339.67
  5. Step 5: Solve for x
    x = 130,298,600,339.67/427,619.91
  6. Step 6: Final answer
    x = 304,706.58

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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.