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Finding the Fourth Proportional to 318,462.45, 439,674.54 and 219,178.14

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Solution

The fourth proportional to 318,462.45, 439,674.54 and 219,178.14 is: 302,600.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    318,462.45 : 439,674.54 = 219,178.14 : x
  2. Step 2: Convert to fraction form
    318,462.45/439,674.54 = 219,178.14/x
  3. Step 3: Cross multiply
    318,462.45x = 439,674.54 × 219,178.14
  4. Step 4: Simplify right side
    318,462.45x = 96,367,047,882.56
  5. Step 5: Solve for x
    x = 96,367,047,882.56/318,462.45
  6. Step 6: Final answer
    x = 302,600.98

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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.