Home / 215,645.21-297,583.53-135,116.22

Finding the Fourth Proportional to 215,645.21, 297,583.53 and 135,116.22

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Solution

The fourth proportional to 215,645.21, 297,583.53 and 135,116.22 is: 186,456.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    215,645.21 : 297,583.53 = 135,116.22 : x
  2. Step 2: Convert to fraction form
    215,645.21/297,583.53 = 135,116.22/x
  3. Step 3: Cross multiply
    215,645.21x = 297,583.53 × 135,116.22
  4. Step 4: Simplify right side
    215,645.21x = 40,208,361,707.86
  5. Step 5: Solve for x
    x = 40,208,361,707.86/215,645.21
  6. Step 6: Final answer
    x = 186,456.09

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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.