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Finding the Fourth Proportional to 448,105, 671,919.90 and 132,518.20

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Solution

The fourth proportional to 448,105, 671,919.90 and 132,518.20 is: 198,707.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    448,105 : 671,919.90 = 132,518.20 : x
  2. Step 2: Convert to fraction form
    448,105/671,919.90 = 132,518.20/x
  3. Step 3: Cross multiply
    448,105x = 671,919.90 × 132,518.20
  4. Step 4: Simplify right side
    448,105x = 89,041,615,692.18
  5. Step 5: Solve for x
    x = 89,041,615,692.18/448,105
  6. Step 6: Final answer
    x = 198,707.03

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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.