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Finding the Fourth Proportional to 448,500.78, 618,943.54 and 274,099.23

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Solution

The fourth proportional to 448,500.78, 618,943.54 and 274,099.23 is: 378,264.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    448,500.78 : 618,943.54 = 274,099.23 : x
  2. Step 2: Convert to fraction form
    448,500.78/618,943.54 = 274,099.23/x
  3. Step 3: Cross multiply
    448,500.78x = 618,943.54 × 274,099.23
  4. Step 4: Simplify right side
    448,500.78x = 169,651,947,727.47
  5. Step 5: Solve for x
    x = 169,651,947,727.47/448,500.78
  6. Step 6: Final answer
    x = 378,264.55

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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.