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Finding the Fourth Proportional to 289,453.86, 399,434.76 and 162,122.94

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Solution

The fourth proportional to 289,453.86, 399,434.76 and 162,122.94 is: 223,723.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    289,453.86 : 399,434.76 = 162,122.94 : x
  2. Step 2: Convert to fraction form
    289,453.86/399,434.76 = 162,122.94/x
  3. Step 3: Cross multiply
    289,453.86x = 399,434.76 × 162,122.94
  4. Step 4: Simplify right side
    289,453.86x = 64,757,537,629.39
  5. Step 5: Solve for x
    x = 64,757,537,629.39/289,453.86
  6. Step 6: Final answer
    x = 223,723.18

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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.