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Finding the Fourth Proportional to 448,170, 618,487.80 and 246,978.96

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Solution

The fourth proportional to 448,170, 618,487.80 and 246,978.96 is: 340,838.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    448,170 : 618,487.80 = 246,978.96 : x
  2. Step 2: Convert to fraction form
    448,170/618,487.80 = 246,978.96/x
  3. Step 3: Cross multiply
    448,170x = 618,487.80 × 246,978.96
  4. Step 4: Simplify right side
    448,170x = 152,753,473,616.69
  5. Step 5: Solve for x
    x = 152,753,473,616.69/448,170
  6. Step 6: Final answer
    x = 340,838.24

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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.