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Finding the Fourth Proportional to 447,998.40, 671,988.96 and 111,039.75

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Solution

The fourth proportional to 447,998.40, 671,988.96 and 111,039.75 is: 166,557.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    447,998.40 : 671,988.96 = 111,039.75 : x
  2. Step 2: Convert to fraction form
    447,998.40/671,988.96 = 111,039.75/x
  3. Step 3: Cross multiply
    447,998.40x = 671,988.96 × 111,039.75
  4. Step 4: Simplify right side
    447,998.40x = 74,617,486,121.16
  5. Step 5: Solve for x
    x = 74,617,486,121.16/447,998.40
  6. Step 6: Final answer
    x = 166,557.48

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.