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Finding the Fourth Proportional to 448,418, 618,860.58 and 247,214

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Solution

The fourth proportional to 448,418, 618,860.58 and 247,214 is: 341,179.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    448,418 : 618,860.58 = 247,214 : x
  2. Step 2: Convert to fraction form
    448,418/618,860.58 = 247,214/x
  3. Step 3: Cross multiply
    448,418x = 618,860.58 × 247,214
  4. Step 4: Simplify right side
    448,418x = 152,990,999,424.12
  5. Step 5: Solve for x
    x = 152,990,999,424.12/448,418
  6. Step 6: Final answer
    x = 341,179.43

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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.