Home / 218,913.70-328,370.55-140,181.70

Finding the Fourth Proportional to 218,913.70, 328,370.55 and 140,181.70

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Solution

The fourth proportional to 218,913.70, 328,370.55 and 140,181.70 is: 210,272.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,913.70 : 328,370.55 = 140,181.70 : x
  2. Step 2: Convert to fraction form
    218,913.70/328,370.55 = 140,181.70/x
  3. Step 3: Cross multiply
    218,913.70x = 328,370.55 × 140,181.70
  4. Step 4: Simplify right side
    218,913.70x = 46,031,541,928.94
  5. Step 5: Solve for x
    x = 46,031,541,928.94/218,913.70
  6. Step 6: Final answer
    x = 210,272.55

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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.