Home / 320,492.48-442,415.81-199,693.45

Finding the Fourth Proportional to 320,492.48, 442,415.81 and 199,693.45

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Solution

The fourth proportional to 320,492.48, 442,415.81 and 199,693.45 is: 275,661.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    320,492.48 : 442,415.81 = 199,693.45 : x
  2. Step 2: Convert to fraction form
    320,492.48/442,415.81 = 199,693.45/x
  3. Step 3: Cross multiply
    320,492.48x = 442,415.81 × 199,693.45
  4. Step 4: Simplify right side
    320,492.48x = 88,347,540,039.64
  5. Step 5: Solve for x
    x = 88,347,540,039.64/320,492.48
  6. Step 6: Final answer
    x = 275,661.82

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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.