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Finding the Fourth Proportional to 446,317.80, 669,482.12 and 130,781.08

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Solution

The fourth proportional to 446,317.80, 669,482.12 and 130,781.08 is: 196,173.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    446,317.80 : 669,482.12 = 130,781.08 : x
  2. Step 2: Convert to fraction form
    446,317.80/669,482.12 = 130,781.08/x
  3. Step 3: Cross multiply
    446,317.80x = 669,482.12 × 130,781.08
  4. Step 4: Simplify right side
    446,317.80x = 87,555,594,694.29
  5. Step 5: Solve for x
    x = 87,555,594,694.29/446,317.80
  6. Step 6: Final answer
    x = 196,173.21

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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.