Home / 219,913.57-303,411.18-129,240.55

Finding the Fourth Proportional to 219,913.57, 303,411.18 and 129,240.55

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Solution

The fourth proportional to 219,913.57, 303,411.18 and 129,240.55 is: 178,311.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    219,913.57 : 303,411.18 = 129,240.55 : x
  2. Step 2: Convert to fraction form
    219,913.57/303,411.18 = 129,240.55/x
  3. Step 3: Cross multiply
    219,913.57x = 303,411.18 × 129,240.55
  4. Step 4: Simplify right side
    219,913.57x = 39,213,027,779.35
  5. Step 5: Solve for x
    x = 39,213,027,779.35/219,913.57
  6. Step 6: Final answer
    x = 178,311.09

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.