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Finding the Fourth Proportional to 379,666.32, 523,950.48 and 209,911.44

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Solution

The fourth proportional to 379,666.32, 523,950.48 and 209,911.44 is: 289,683.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    379,666.32 : 523,950.48 = 209,911.44 : x
  2. Step 2: Convert to fraction form
    379,666.32/523,950.48 = 209,911.44/x
  3. Step 3: Cross multiply
    379,666.32x = 523,950.48 × 209,911.44
  4. Step 4: Simplify right side
    379,666.32x = 109,983,199,745.49
  5. Step 5: Solve for x
    x = 109,983,199,745.49/379,666.32
  6. Step 6: Final answer
    x = 289,683.85

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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.