Home / 381,931.32-527,047.34-212,175.80

Finding the Fourth Proportional to 381,931.32, 527,047.34 and 212,175.80

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Solution

The fourth proportional to 381,931.32, 527,047.34 and 212,175.80 is: 292,792.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    381,931.32 : 527,047.34 = 212,175.80 : x
  2. Step 2: Convert to fraction form
    381,931.32/527,047.34 = 212,175.80/x
  3. Step 3: Cross multiply
    381,931.32x = 527,047.34 × 212,175.80
  4. Step 4: Simplify right side
    381,931.32x = 111,826,691,002.37
  5. Step 5: Solve for x
    x = 111,826,691,002.37/381,931.32
  6. Step 6: Final answer
    x = 292,792.67

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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.