Home / 219,103.32-302,371.74-138,501.84

Finding the Fourth Proportional to 219,103.32, 302,371.74 and 138,501.84

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Solution

The fourth proportional to 219,103.32, 302,371.74 and 138,501.84 is: 191,138.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    219,103.32 : 302,371.74 = 138,501.84 : x
  2. Step 2: Convert to fraction form
    219,103.32/302,371.74 = 138,501.84/x
  3. Step 3: Cross multiply
    219,103.32x = 302,371.74 × 138,501.84
  4. Step 4: Simplify right side
    219,103.32x = 41,879,042,354.00
  5. Step 5: Solve for x
    x = 41,879,042,354.00/219,103.32
  6. Step 6: Final answer
    x = 191,138.33

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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.