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Finding the Fourth Proportional to 285,221.95, 427,217.81 and 268,453.51

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Solution

The fourth proportional to 285,221.95, 427,217.81 and 268,453.51 is: 402,101.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    285,221.95 : 427,217.81 = 268,453.51 : x
  2. Step 2: Convert to fraction form
    285,221.95/427,217.81 = 268,453.51/x
  3. Step 3: Cross multiply
    285,221.95x = 427,217.81 × 268,453.51
  4. Step 4: Simplify right side
    285,221.95x = 114,688,120,629.01
  5. Step 5: Solve for x
    x = 114,688,120,629.01/285,221.95
  6. Step 6: Final answer
    x = 402,101.31

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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.