Home / 218,885.14-302,108.46-138,261.39

Finding the Fourth Proportional to 218,885.14, 302,108.46 and 138,261.39

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Solution

The fourth proportional to 218,885.14, 302,108.46 and 138,261.39 is: 190,830.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,885.14 : 302,108.46 = 138,261.39 : x
  2. Step 2: Convert to fraction form
    218,885.14/302,108.46 = 138,261.39/x
  3. Step 3: Cross multiply
    218,885.14x = 302,108.46 × 138,261.39
  4. Step 4: Simplify right side
    218,885.14x = 41,769,935,610.36
  5. Step 5: Solve for x
    x = 41,769,935,610.36/218,885.14
  6. Step 6: Final answer
    x = 190,830.39

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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.