Home / 219,100.92-302,543.64-138,670.36

Finding the Fourth Proportional to 219,100.92, 302,543.64 and 138,670.36

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Solution

The fourth proportional to 219,100.92, 302,543.64 and 138,670.36 is: 191,481.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    219,100.92 : 302,543.64 = 138,670.36 : x
  2. Step 2: Convert to fraction form
    219,100.92/302,543.64 = 138,670.36/x
  3. Step 3: Cross multiply
    219,100.92x = 302,543.64 × 138,670.36
  4. Step 4: Simplify right side
    219,100.92x = 41,953,835,474.51
  5. Step 5: Solve for x
    x = 41,953,835,474.51/219,100.92
  6. Step 6: Final answer
    x = 191,481.79

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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.