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Finding the Fourth Proportional to 448,321, 618,682.98 and 269,473

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Solution

The fourth proportional to 448,321, 618,682.98 and 269,473 is: 371,872.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    448,321 : 618,682.98 = 269,473 : x
  2. Step 2: Convert to fraction form
    448,321/618,682.98 = 269,473/x
  3. Step 3: Cross multiply
    448,321x = 618,682.98 × 269,473
  4. Step 4: Simplify right side
    448,321x = 166,718,358,669.54
  5. Step 5: Solve for x
    x = 166,718,358,669.54/448,321
  6. Step 6: Final answer
    x = 371,872.74

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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.