Home / 814,068.56-1,221,161.12-215,023.72

Finding the Fourth Proportional to 814,068.56, 1,221,161.12 and 215,023.72

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Solution

The fourth proportional to 814,068.56, 1,221,161.12 and 215,023.72 is: 322,550.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    814,068.56 : 1,221,161.12 = 215,023.72 : x
  2. Step 2: Convert to fraction form
    814,068.56/1,221,161.12 = 215,023.72/x
  3. Step 3: Cross multiply
    814,068.56x = 1,221,161.12 × 215,023.72
  4. Step 4: Simplify right side
    814,068.56x = 262,578,606,741.77
  5. Step 5: Solve for x
    x = 262,578,606,741.77/814,068.56
  6. Step 6: Final answer
    x = 322,550.97

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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.