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Finding the Fourth Proportional to 469,269, 648,125.82 and 318,103.56

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Solution

The fourth proportional to 469,269, 648,125.82 and 318,103.56 is: 439,345.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    469,269 : 648,125.82 = 318,103.56 : x
  2. Step 2: Convert to fraction form
    469,269/648,125.82 = 318,103.56/x
  3. Step 3: Cross multiply
    469,269x = 648,125.82 × 318,103.56
  4. Step 4: Simplify right side
    469,269x = 206,171,130,669.92
  5. Step 5: Solve for x
    x = 206,171,130,669.92/469,269
  6. Step 6: Final answer
    x = 439,345.30

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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.