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Finding the Fourth Proportional to 448,439.63, 618,846.75 and 247,235.63

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Solution

The fourth proportional to 448,439.63, 618,846.75 and 247,235.63 is: 341,185.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    448,439.63 : 618,846.75 = 247,235.63 : x
  2. Step 2: Convert to fraction form
    448,439.63/618,846.75 = 247,235.63/x
  3. Step 3: Cross multiply
    448,439.63x = 618,846.75 × 247,235.63
  4. Step 4: Simplify right side
    448,439.63x = 153,000,963,015.47
  5. Step 5: Solve for x
    x = 153,000,963,015.47/448,439.63
  6. Step 6: Final answer
    x = 341,185.20

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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.