Home / 215,648.91-322,981.29-190,421.87

Finding the Fourth Proportional to 215,648.91, 322,981.29 and 190,421.87

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Solution

The fourth proportional to 215,648.91, 322,981.29 and 190,421.87 is: 285,198.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    215,648.91 : 322,981.29 = 190,421.87 : x
  2. Step 2: Convert to fraction form
    215,648.91/322,981.29 = 190,421.87/x
  3. Step 3: Cross multiply
    215,648.91x = 322,981.29 × 190,421.87
  4. Step 4: Simplify right side
    215,648.91x = 61,502,699,601.91
  5. Step 5: Solve for x
    x = 61,502,699,601.91/215,648.91
  6. Step 6: Final answer
    x = 285,198.29

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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.