Home / 218,989.56-302,207.04-138,453.44

Finding the Fourth Proportional to 218,989.56, 302,207.04 and 138,453.44

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Solution

The fourth proportional to 218,989.56, 302,207.04 and 138,453.44 is: 191,066.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,989.56 : 302,207.04 = 138,453.44 : x
  2. Step 2: Convert to fraction form
    218,989.56/302,207.04 = 138,453.44/x
  3. Step 3: Cross multiply
    218,989.56x = 302,207.04 × 138,453.44
  4. Step 4: Simplify right side
    218,989.56x = 41,841,604,280.22
  5. Step 5: Solve for x
    x = 41,841,604,280.22/218,989.56
  6. Step 6: Final answer
    x = 191,066.66

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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.