Home / 215,830.72-323,749.20-82,717.76

Finding the Fourth Proportional to 215,830.72, 323,749.20 and 82,717.76

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Solution

The fourth proportional to 215,830.72, 323,749.20 and 82,717.76 is: 124,077.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    215,830.72 : 323,749.20 = 82,717.76 : x
  2. Step 2: Convert to fraction form
    215,830.72/323,749.20 = 82,717.76/x
  3. Step 3: Cross multiply
    215,830.72x = 323,749.20 × 82,717.76
  4. Step 4: Simplify right side
    215,830.72x = 26,779,808,625.79
  5. Step 5: Solve for x
    x = 26,779,808,625.79/215,830.72
  6. Step 6: Final answer
    x = 124,077.84

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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.