Home / 218,987.56-302,204.28-138,451.44

Finding the Fourth Proportional to 218,987.56, 302,204.28 and 138,451.44

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Solution

The fourth proportional to 218,987.56, 302,204.28 and 138,451.44 is: 191,063.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,987.56 : 302,204.28 = 138,451.44 : x
  2. Step 2: Convert to fraction form
    218,987.56/302,204.28 = 138,451.44/x
  3. Step 3: Cross multiply
    218,987.56x = 302,204.28 × 138,451.44
  4. Step 4: Simplify right side
    218,987.56x = 41,840,617,740.16
  5. Step 5: Solve for x
    x = 41,840,617,740.16/218,987.56
  6. Step 6: Final answer
    x = 191,063.90

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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.