Home / 427,037.08-640,582.04-142,753.21

Finding the Fourth Proportional to 427,037.08, 640,582.04 and 142,753.21

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Solution

The fourth proportional to 427,037.08, 640,582.04 and 142,753.21 is: 214,138.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    427,037.08 : 640,582.04 = 142,753.21 : x
  2. Step 2: Convert to fraction form
    427,037.08/640,582.04 = 142,753.21/x
  3. Step 3: Cross multiply
    427,037.08x = 640,582.04 × 142,753.21
  4. Step 4: Simplify right side
    427,037.08x = 91,445,141,764.58
  5. Step 5: Solve for x
    x = 91,445,141,764.58/427,037.08
  6. Step 6: Final answer
    x = 214,138.65

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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.