Home / 219,543.21-329,425.38-86,518.94

Finding the Fourth Proportional to 219,543.21, 329,425.38 and 86,518.94

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Solution

The fourth proportional to 219,543.21, 329,425.38 and 86,518.94 is: 129,821.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    219,543.21 : 329,425.38 = 86,518.94 : x
  2. Step 2: Convert to fraction form
    219,543.21/329,425.38 = 86,518.94/x
  3. Step 3: Cross multiply
    219,543.21x = 329,425.38 × 86,518.94
  4. Step 4: Simplify right side
    219,543.21x = 28,501,533,039.57
  5. Step 5: Solve for x
    x = 28,501,533,039.57/219,543.21
  6. Step 6: Final answer
    x = 129,821.97

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1.5x scale

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.