Home / 309,887.32-427,645.39-172,066.55

Finding the Fourth Proportional to 309,887.32, 427,645.39 and 172,066.55

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Solution

The fourth proportional to 309,887.32, 427,645.39 and 172,066.55 is: 237,452.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    309,887.32 : 427,645.39 = 172,066.55 : x
  2. Step 2: Convert to fraction form
    309,887.32/427,645.39 = 172,066.55/x
  3. Step 3: Cross multiply
    309,887.32x = 427,645.39 × 172,066.55
  4. Step 4: Simplify right side
    309,887.32x = 73,583,464,742.48
  5. Step 5: Solve for x
    x = 73,583,464,742.48/309,887.32
  6. Step 6: Final answer
    x = 237,452.33

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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.