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Finding the Fourth Proportional to 448,216.61, 618,538.91 and 247,012.61

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Solution

The fourth proportional to 448,216.61, 618,538.91 and 247,012.61 is: 340,877.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    448,216.61 : 618,538.91 = 247,012.61 : x
  2. Step 2: Convert to fraction form
    448,216.61/618,538.91 = 247,012.61/x
  3. Step 3: Cross multiply
    448,216.61x = 618,538.91 × 247,012.61
  4. Step 4: Simplify right side
    448,216.61x = 152,786,906,217.90
  5. Step 5: Solve for x
    x = 152,786,906,217.90/448,216.61
  6. Step 6: Final answer
    x = 340,877.39

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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.