Home / 214,440.04-321,815.58-121,128.04

Finding the Fourth Proportional to 214,440.04, 321,815.58 and 121,128.04

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Solution

The fourth proportional to 214,440.04, 321,815.58 and 121,128.04 is: 181,779.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    214,440.04 : 321,815.58 = 121,128.04 : x
  2. Step 2: Convert to fraction form
    214,440.04/321,815.58 = 121,128.04/x
  3. Step 3: Cross multiply
    214,440.04x = 321,815.58 × 121,128.04
  4. Step 4: Simplify right side
    214,440.04x = 38,980,890,446.86
  5. Step 5: Solve for x
    x = 38,980,890,446.86/214,440.04
  6. Step 6: Final answer
    x = 181,779.91

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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.