Home / 381,217.38-526,143-211,506.18

Finding the Fourth Proportional to 381,217.38, 526,143 and 211,506.18

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Solution

The fourth proportional to 381,217.38, 526,143 and 211,506.18 is: 291,913.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    381,217.38 : 526,143 = 211,506.18 : x
  2. Step 2: Convert to fraction form
    381,217.38/526,143 = 211,506.18/x
  3. Step 3: Cross multiply
    381,217.38x = 526,143 × 211,506.18
  4. Step 4: Simplify right side
    381,217.38x = 111,282,496,063.74
  5. Step 5: Solve for x
    x = 111,282,496,063.74/381,217.38
  6. Step 6: Final answer
    x = 291,913.49

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1.5x scale

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.