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Finding the Fourth Proportional to 285,221.99, 427,217.90 and 268,453.56

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Solution

The fourth proportional to 285,221.99, 427,217.90 and 268,453.56 is: 402,101.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    285,221.99 : 427,217.90 = 268,453.56 : x
  2. Step 2: Convert to fraction form
    285,221.99/427,217.90 = 268,453.56/x
  3. Step 3: Cross multiply
    285,221.99x = 427,217.90 × 268,453.56
  4. Step 4: Simplify right side
    285,221.99x = 114,688,164,808.46
  5. Step 5: Solve for x
    x = 114,688,164,808.46/285,221.99
  6. Step 6: Final answer
    x = 402,101.42

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.