Home / 306,492,840.12-422,969,086.38-167,272,531.32

Finding the Fourth Proportional to 306,492,840.12, 422,969,086.38 and 167,272,531.32

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Solution

The fourth proportional to 306,492,840.12, 422,969,086.38 and 167,272,531.32 is: 230,840,987.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    306,492,840.12 : 422,969,086.38 = 167,272,531.32 : x
  2. Step 2: Convert to fraction form
    306,492,840.12/422,969,086.38 = 167,272,531.32/x
  3. Step 3: Cross multiply
    306,492,840.12x = 422,969,086.38 × 167,272,531.32
  4. Step 4: Simplify right side
    306,492,840.12x = 70,751,109,748,890,328
  5. Step 5: Solve for x
    x = 70,751,109,748,890,328/306,492,840.12
  6. Step 6: Final answer
    x = 230,840,987.09

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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.