Home / 217,249.80-326,166.30-138,712.20

Finding the Fourth Proportional to 217,249.80, 326,166.30 and 138,712.20

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Solution

The fourth proportional to 217,249.80, 326,166.30 and 138,712.20 is: 208,254.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    217,249.80 : 326,166.30 = 138,712.20 : x
  2. Step 2: Convert to fraction form
    217,249.80/326,166.30 = 138,712.20/x
  3. Step 3: Cross multiply
    217,249.80x = 326,166.30 × 138,712.20
  4. Step 4: Simplify right side
    217,249.80x = 45,243,245,038.86
  5. Step 5: Solve for x
    x = 45,243,245,038.86/217,249.80
  6. Step 6: Final answer
    x = 208,254.48

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.