Home / 406,268.12-609,028.99-139,965.32

Finding the Fourth Proportional to 406,268.12, 609,028.99 and 139,965.32

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Solution

The fourth proportional to 406,268.12, 609,028.99 and 139,965.32 is: 209,819.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    406,268.12 : 609,028.99 = 139,965.32 : x
  2. Step 2: Convert to fraction form
    406,268.12/609,028.99 = 139,965.32/x
  3. Step 3: Cross multiply
    406,268.12x = 609,028.99 × 139,965.32
  4. Step 4: Simplify right side
    406,268.12x = 85,242,934,079.57
  5. Step 5: Solve for x
    x = 85,242,934,079.57/406,268.12
  6. Step 6: Final answer
    x = 209,819.40

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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.