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Finding the Fourth Proportional to 378,658.55, 522,548.79 and 208,892.67

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Solution

The fourth proportional to 378,658.55, 522,548.79 and 208,892.67 is: 288,271.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    378,658.55 : 522,548.79 = 208,892.67 : x
  2. Step 2: Convert to fraction form
    378,658.55/522,548.79 = 208,892.67/x
  3. Step 3: Cross multiply
    378,658.55x = 522,548.79 × 208,892.67
  4. Step 4: Simplify right side
    378,658.55x = 109,156,613,907.33
  5. Step 5: Solve for x
    x = 109,156,613,907.33/378,658.55
  6. Step 6: Final answer
    x = 288,271.89

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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.