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Finding the Fourth Proportional to 379,209.93, 523,519.88 and 258,528.54

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Solution

The fourth proportional to 379,209.93, 523,519.88 and 258,528.54 is: 356,912.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    379,209.93 : 523,519.88 = 258,528.54 : x
  2. Step 2: Convert to fraction form
    379,209.93/523,519.88 = 258,528.54/x
  3. Step 3: Cross multiply
    379,209.93x = 523,519.88 × 258,528.54
  4. Step 4: Simplify right side
    379,209.93x = 135,344,830,237.38
  5. Step 5: Solve for x
    x = 135,344,830,237.38/379,209.93
  6. Step 6: Final answer
    x = 356,912.67

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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.